Question: Indicate whether graph specifies a function. /
Indicate whether graph specifies a function.
> Name three factors that can prevent a firearms examiner from obtaining a perfect match of striation markings around the periphery of two bullets.
> How are striations useful for comparing bullets?
> What two methods are used to preserve shoe and tire marks impressed into soft earth? Why is it important to conduct both procedures on the impression?
> What chemicals are used to restore an obliterated serial number? What do these chemicals do to reveal the obliterated number?
> What are the two categories of pollen-producing plants? Which type of pollen is useful for identifying a geographical origin? Which type is deposited on clothing or objects only by direct contact with the plant?
> Which two instruments are combined to make a microspectrophotometer? Describe the utility of using this device to produce an IR spectrum of evidence such as fibers or paints.
> A) Fibers derived from either natural or synthetic polymers B) A transition stage between the anagen and telogen phases of hair growth C) Two or more atoms held together by chemical bonds D) A cellular column running through the center of the hair E) DN
> A) The separation of light into its component wavelengths B) A constant property of matter that reflects the amount of material present C) The behavior of a substance without alteration of the substance’s composition through a chemical reaction D) A diff
> Which of the following is NOT a layer of the hair shaft? A) Cuticle B) Cortex C) Medulla D) Follicle 2) Which part of the hair shaft is most resistant to chemical decomposition? A) Cortex B) Medulla C) Follicle D) Cuticle 3) Which feature of hai
> A) The cut or low-lying portions between the lands in a rifled bore B) An interior constriction placed at or near the muzzle end of a shotgun’s barrel to control shot dispersion C) A discipline mainly concerned with determining whether a bullet or cartri
> Match the word in Column 1 to its definition in Column 2. Each answer can only be used once. A) Size of the specimen area being observed B) Provides a simultaneous view of two specimens C) Space between the specimen and objective lens D) Illumination req
> A) A cellular network facility that allows users to send and receive text messages B) A software mechanism that defines the way files are named, stored, organized, and accessed C) A set of standards for second-generation cellular networks D) Assessment o
> A) A set of instructions compiled into a program that performs a particular task B) A group of sectors in multiples of two; typically the minimum space allocated to a file C) A standard method by which Internet sites are addressed D) All data that the op
> Match the word in Column 1 to its definition in Column 2. Each answer can only be used once. A) Any document that has become darkened and brittle through exposure to fire or excessive heat B) The removal of writing, typewriting, or printing from a docum
> A) The entire range of possible gas or vapor fuel concentrations in air that are capable of burning B) Any material used to start or sustain a fire C) The decomposition of solid organic matter by heat D) The minimum temperature at which a fuel spontaneou
> A) A technique for separating molecules through their migration on a support medium while under the influence of an electrical potential B) Different fragment lengths of base pairs that result from cutting a DNA molecule with restriction enzymes C) A gen
> A) A protein that destroys or inactivates a specific antigen B) An abnormally low sperm count C) The liquid that separates from the blood when a clot is formed D) The physical manifestation of a genetic trait such as shape, color, and blood type E) A str
> A) An atom differing from another atom of the same element in the number of neutrons in its nucleus B) A type of emission spectrum showing a series of lines separated by black areas C) A particle with no electrical charge that is one of the basic structu
> A) Small sacs in the lungs through whose walls air and other vapors are exchanged between the breath and the blood B) Substance that stops the growth of microorganisms in blood C) A blood vessel that carries blood away from the heart D) A compound capa
> The fracture pattern of glass usually has: A) Radial lines. B) Concentric lines. C) Radial and concentric lines. D) Directional lines. 32) If glass cannot be physically pieced together, then the control and question glass are best compared by their: A)
> A) Synthetic compounds, chemically related to the male sex hormone testosterone, that are used to promote muscle growth B) Any of several analytical techniques for separating mixtures into their components by attraction to a stationary phase while being
> One inch is equivalent to ________ centimeters. 2) ________ is defined as weight per unit volume. 3) A piece of glass that is floating on the liquid’s surface shows that the density of the glass is ________ than the density of the liquid. 4) If glass
> Discernible random nicks and breaks that the tool has acquired through wear and use typically impart ________ characteristics to tool marks. 12) Before any impression is moved or otherwise handled, it must be ________ to show all the observable details
> ________ refers to the spiral grooves impressed in the bore of a firearm barrel. 2) ________ are the cut or low-lying portions between the lands in a rifled bore. 3) ________ are markings impressed into the metal of a barrel. 4) The ________ microscop
> A ________ microscope is used to make side-by-side comparisons of specimens. 12) If the ________ on two bullets viewed through a comparison microscope are alike, the examiner can conclude that both bullets traveled through the same barrel. 13) Light co
> The most important tool of the firearms examiner is the ________ microscope. 2) The major attraction of the ________ is its high magnification and depth of field. 3) A(n) ________ image is an image formed when light rays converge on a surface. 4) ____
> Since the 1960s, the concepts of handoff and frequency reuse allowed users to move between ________ without dropping a call. 2) In many ways mobile device forensics is similar to ________ forensics. 3) When ________ was launched in Japan in 2001, movin
> ________ space is empty space on a hard disk drive (HDD) created because of the way the HDD stores files. 12) A(n) ________ address is a unique address given to every computer connected to the Internet. 13) Chat and instant messages typically are store
> ________ comprises the physical components of the computer. 2) ________ is a set of instructions compiled into a program that performs a particular task. 3) The ________ is the main chip within the computer. 4) ________ consists of programs that are u
> A(n) ________ document is any object that contains handwritten or typewritten markings whose source or authenticity is in doubt. 2) ________ are authentic samples of an individual’s writing used for comparison to suspect handwriting samples. 3) Transit
> What is the main ingredient in ordinary glass? A) Lime (CaO) B) Soda (NaCO) C) Sand D) Metal oxides 22) Pyrex glass: A) Is put through an annealing process. B) Has been tempered. C) Is made with the addition of boron oxide. D) Is laminated. 23)
> The most obvious characteristic of a high or contained low explosive is the presence of a(n) ________ at the origin of the blast. 22) The ingredients in black powder are potassium nitrate, carbon, and ________. 23) A primary explosive is easily detonat
> Warm air expands, which causes it to become ________ dense. 12) Most arsons are started with ________-based accelerants such as gasoline or kerosene. 13) Typically, the rate of a chemical reaction ________ when the temperature is raised. 14) The colle
> ________ is the combination of oxygen with other substances to produce new substances. 2) In a(n) ________ reaction, heat energy is liberated. 3) Two factors that influence the ________ of reaction of a fire are the physical state of the fuel and the t
> ________ present in soil rapidly degrade DNA. 12) The sequence of ________ acids in a protein chain determines the shape and function of the protein. 13) The ________ is the fundamental unit of heredity. 14) DNA ________ are enzymes that assemble a ne
> ________ is the molecule that carries the body’s genetic information. 2) A ________ is a threadlike structure in the cell nucleus along which the genes are located. 3) DNA is a large molecule called a polymer, created by linking a series of repeating u
> A(n) ________ is the particular combination of genes present in the cells of an individual. 12) Two commonly used ________ tests for blood are the Kastle-Meyer test and the Hemastix test. 13) The reaction of luminol with blood results in the production
> ________ is the fluid portion of the blood. 2) A(n) ________ is a protein in the blood serum that destroys or inactivates a specific antigen. 3) When serum containing B antibodies is added to red blood cells carrying the B antigen, the blood ________.
> Alpha particles are a type of radiation composed of ________ atoms minus their orbiting electrons. 12) When an electron moves to a lower-energy orbital, it ________ energy. 13) ________ as physical evidence is most frequently encountered in hit-and-run
> A ________ element is an element found in very small quantities. 2) Elements selectively absorb and emit ________. 3) A(n) ________ spectrum shows a continuous band of colors all blending into one another. 4) A(n) ________ spectrum shows a series of l
> The current legal measure of drunk driving in the United States is a blood-alcohol concentration of ________ percent weight/volume. 12) Blood and ________ should be collected from any suspected drug user. 13) Alcohol, marijuana, and ________ account fo
> Sublimation is defined as a change of state from: A) Gas to liquid. B) Liquid to solid. C) Solid to liquid. D) Solid to gas. 12) Which physical state has volume but no specific shape? A) Gas B) Liquid C) Solid D) No such state exists 13) The a
> A compound microscope is equipped with two objective lenses (10x and 45x) and has a 10x ocular lens. The highest magnification attainable with this instrument is: A) 65x B) 100x C) 650x D) 450x 2) In order to examine an opaque object with a compoun
> Find x
> Equation specifies a function with independent variable x. Determine whether the function is linear, constant, or neither. x + xy + 1 = 0
> Equation specifies a function with independent variable x. Determine whether the function is linear, constant, or neither. 2x - 4y - 6 = 0
> Equation specifies a function with independent variable x. Determine whether the function is linear, constant, or neither.
> Indicate whether graph specifies a function.
> Indicate whether graph specifies a function.
> Indicate whether table specifies a function.
> Indicate whether table specifies a function.
> The U.S Army is considering a new parachute, the Advanced Tactical Parachute System (ATPS). A jump at 2,880 ft using the ATPS system lasts 180 secs. (A) Find a linear model relating altitude a (in feet) and time in the air t (in seconds). (B) Find the
> Refer to Problem 3. In fresh water, the pressure at a depth of 34 ft is 2 atms, or 29.4 pounds per square inch. (A) Find a linear model that relates pressure P (in pounds per square inch) to depth d (in feet). (B) Interpret the slope of the model. (C)
> write the interval as an inequality or double inequality. [ -6 , -1 ]
> Dr. J. D. Robinson also published the following estimate of the ideal body weight of a man: 52 kg + 1.9 kg for each inch over 5 ft (A) Find a linear model for Robinson’s estimate of the ideal weight of a man using w for ideal body weight (in kilograms)
> Table 17 contains price–supply data and price–demand data for soybeans. Find a linear regression model for the price–supply data where x is supply (in billions of b
> The distance d between a fixed spring and the floor is a linear function of the weight w attached to the bottom of the spring. The bottom of the spring is 18 inches from the floor when the weight is 3 pounds, and 10 inches from the floor when the weight
> Find a linear regression model for the men’s 200-meter backstroke data given in Table 15, where x is years since 1990 and y is winning time (in seconds). Do the same for the women’s 200-meter backstroke data. (Round re
> At a price of $3.20 per bushel, the supply of corn is 9,800 million bushels and the demand is 9,200 million bushels. At a price of $2.95 per bushel, the supply is 9,300 million bushels and the demand is 9,700 million bushels. (A) Find a price–supply equ
> Find a linear regression model for the data on average annual precipitation in Table 14, where x is years since 1960 and y is precipitation (in inches). (Round regression coefficients to three decimal places). Use the model to estimate the average annual
> The percentage of male cigarette smokers in the United States declined from 25.7% in 2000 to 16.7% in 2015. (Source: Centers for Disease Control) (A) Find a linear equation relating percentage of male smokers (m) to years since 2000 (t). (B) Use this equ
> Table 13 lists fall graduate enrollment by gender in U.S. degree-granting institutions. The figure contains a scatter plot and regression line for each data set, where x represents years since 1980 and y represents enrollment (in millions). (A) Interpre
> The median household income divides the households into two groups: the half whose income is less than or equal to the median, and the half whose income is greater than the median. The median household income in the United States grew from about $30,000
> The figure contains a scatter plot of 100 data points for black walnut trees and the linear regression model for this data. (A) Interpret the slope of the model. (B) What is the effect of a 1-in. increase in Dbh? (C) Estimate the height of a black wal
> sketch a graph of each equation in a rectangular coordinate system. 8x – 3y = 24
> The airspeed indicator on some aircraft is affected by the changes in atmospheric pressure at different altitudes. A pilot can estimate the true airspeed by observing the indicated airspeed and adding to it about 1.6% for every 1,000 feet of altitude. (S
> A linear regression model for the propylene glycol data in Table 11 is P = -0.54T + 34 where P is the percentage of propylene glycol in the deicing solution and T is the temperature at which the solution freezes. (A) Draw a scatter plot of the data and
> The temperature at which water starts to boil is also linearly related to barometric pressure. Water boils at 212°F at a pressure of 29.9 inHg (inches of mercury) and at 191°F at a pressure of 28.4 inHg. (Source: biggreenegg.com) (A) Find a relationship
> A linear regression model for the operating income data in Table 10 is I = 0.82t + 15.84 where I is operating income and t is time since 2000 in years. (A) Draw a scatter plot of the data and a graph of the model on the same axes. (B) Predict Walmart&a
> A charter fishing company buys a new boat for $224,000 and assumes that it will have a trade in value of $115,200 after 16 years. (A) Find a linear model for the depreciated value V of the boat t years after it was purchased. (B) What is the depreciated
> Table 9 contains the state population and the number of licensed drivers in the state (both in millions) for the most populous states in 2014. The regression model for this data is y = 0.62x + 0.29 where x is the state population (in millions) and y is
> A clothing store sells a shirt costing $20 for $33 and a jacket costing $60 for $93. (A) If the markup policy of the store is assumed to be linear, write an equation that expresses retail price R in terms of cost C (wholesale price). (B) What does a st
> The data in Table 7 shows that the percentage of male cigarette smokers in the United States declined from 27.6% in 1997 to 16.7% in 2015. (A) Applying linear regression to the data for males in Table 7 produces the model m = -0.56t + 27.82 where m is p
> A plant can manufacture 50 tennis rackets per day for a total daily cost of $3,855 and 60 tennis rackets per day for a total daily cost of $4,245. (A) Assuming that daily cost and production are linearly related, find the total daily cost of producing x
> Table 6 lists U.S. fossil fuel consumption as a percentage of total energy consumption for selected years. A linear regression model for this data is y = -0.14x + 86.18 where x represents years since 1985 and y represents the corresponding percentage of
> write the interval as an inequality or double inequality. (-3 , 5 ]
> A small company manufactures picnic tables. The weekly fixed cost is $1,200 and the variable cost is $45 per table. Find the total weekly cost of producing x picnic tables. How many picnic tables can be produced for a total weekly cost of $4,800?
> The speed of sound through sea water is linearly related to the temperature of the water. If sound travels at 1,403 m>sec at 0°C and at 1,481 m>sec at 20°C, construct a linear model relating the speed of sound (s) and the air temperature (t). Interpret t
> Discuss the relationship among the graphs of the lines with equation y = -0.5x + b, where b is any real number.
> (A) Find the slope of the line that passes through the given points. (B) Find the standard form of the equation of the line. (C) Find the slope-intercept form of the equation of the line. ( 2, 0 ) and ( 2, -3 )
> Refer to Problem 65. If the IQ of a group of 12-year-old children varies between 80 and 140, what is the range of their mental ages? Data from Problem 65: The IQ (intelligence quotient) is found by dividing the mental age (MA), as indicated on standard
> (A) Find the slope of the line that passes through the given points. (B) Find the standard form of the equation of the line. (C) Find the slope-intercept form of the equation of the line. (1, 4) and ( 0, 4 )
> If the temperature for a 24-hour period at an Antarctic station ranged between -49°F and 14°F (that is, -49 ( F ( 14), what was the range in degrees Celsius? [Note: F = 9/5 C + 32.
> (A) Find the slope of the line that passes through the given points. (B) Find the standard form of the equation of the line. (C) Find the slope-intercept form of the equation of the line. (2, 3) and ( -3, 7 )
> The publisher in Problem 60 finds that rising prices for paper increase the variable costs to $2.70 per book. (A) Discuss possible strategies the company might use to deal with this increase in costs. (B) If the company continues to sell the books for
> (A) Find the slope of the line that passes through the given points. (B) Find the standard form of the equation of the line. (C) Find the slope-intercept form of the equation of the line. ( 1, 2 ) and ( 3, 5 )
> sketch a graph of each equation in a rectangular coordinate system.
> The publisher of a new book figures fixed costs at $92,000 and variable costs at $2.10 for each book produced. If the book is sold to distributors for $15 each, how many must be sold for the publisher to break even?
> Write the slope-intercept form of the equation of the line with the indicated slope that goes through the given point. m = 0.9; ( 2.3, 6.7 )
> A second employee of the computer store in Problem 57 is paid a base salary of $3,000 a month plus a 5% commission on all sales during the month. (A) How much must this employee sell in one month to earn a total of $4,000 for the month? (B) Determine t
> Write the slope-intercept form of the equation of the line with the indicated slope that goes through the given point.
> The local supermarket rents carpet cleaners for $20 a day. These cleaners use shampoo in a special cartridge that sells for $16 and is available only from the supermarket. A home carpet cleaner can be purchased for $300. Shampoo for the home cleaner is r
> Write the slope-intercept form of the equation of the line with the indicated slope that goes through the given point. m = -10; ( 2, -5 )
> Sale prices in a department store are obtained by marking down the retail price by 15%. That is, the sale price is obtained by subtracting 15% of the retail price from the retail price. (A) What is the sale price of a hat that has a retail price of $60?
> Write the slope-intercept form of the equation of the line with the indicated slope that goes through the given point. m = 4; ( 0, 6 )
> If the price change in houses parallels the CPI (see Table 2 in Example 10), what would a house valued at $200,000 in 2016 be valued at (to the nearest dollar) in 1960?If the price change of cars parallels the change in the CPI (see Table 2 in Example 10
> Write the equations of the vertical and horizontal lines through each point. (2.6, 3.8)
> solve for x
> Refer to Problem 49. How should you divide your money between Fund A and Fund B to produce an annual interest income of $30,000? Data From Problem 49: You have $500,000 in an IRA (Individual Retirement Account) at the time you retire. You have the optio
> Write the equations of the vertical and horizontal lines through each point. ( -5, 6)
