[SOLVED] Evaluate the expression. If the answer is

> Perform the row operations indicated in below Problem on the following matrix.

> Perform the row operations indicated in below Problem on the following matrix. Answer:

> Write the system of linear equations that is represented by the given augmented matrix. Assume that the variables are x1 and x2.

> Write the coefficient matrix and the augmented matrix of the given system of linear equations.

> Discuss the validity of each statement. If the statement is true, explain why. If not, give a counter example. If n and r are positive integers and 1 < r < n, then nCr < nCr + 1.

> Write the coefficient matrix and the augmented matrix of the given system of linear equations.

> Refer to the following matrices: For matrix D, find d11 + d21

> Refer to the following matrices: For matrix A, list the elements a21, a12.

> Find an equation in point–slope form, y - y1 = m(x - x1), of the line through the given points. (3, 20) and 1 -5, 42.

> Find the x and y coordinates of the intersection of the given lines. 6x - 5y = 120 and y = 3

> Find the x and y coordinates of the intersection of the given lines. 3x + 4y = 72 and the y axis

> Find the x and y coordinates of the intersection of the given lines. y = 5x + 7 and the x axis

> A ship using sound-sensing devices above and below water recorded a surface explosion 6 seconds sooner by its underwater device than its above-water device. Sound travels in air at 1,100 feet per second and in seawater at 5,000 feet per second. How long

> Repeat Problem 81 if the object is 240 feet above the ground after 1 second and 192 feet above the ground after 2 seconds. Data from 81: An object dropped off the top of a tall building falls vertically with constant acceleration. If s is the distance o

> A company produces Italian sausages and bratwursts at plants in Green Bay and Sheboygan. The hourly production rates at each plant are given in the table. How many hours should each plant operate to exactly fill an order for 62,250 Italian sausages and 7

> Discuss the validity of each statement. If the statement is true, explain why. If not, give a counter example. If n is a positive integer greater than 3, then n! > 2n.

> A fruit grower uses two types of fertilizer in an orange grove, brand A and brand B. Each bag of brand A contains 8 pounds of nitrogen and 4 pounds of phosphoric acid. Each bag of brand B contains 7 pounds of nitrogen and 6 pounds of phosphoric acid. Tes

> Refer to Problem 75. (A) If the company decides to discontinue production of the robust blend and produce only the mild blend, how many pounds of the mild blend can the company produce? How many beans of each type will the company use? Are there any bea

> Refer to Problem 73. Federated Shipping, a competing overnight delivery service, informs the customer in Problem 73 that they would ship the 5-pound package for $29.95 and the 20-pound package for $59.20. (A) If Federated Shipping computes its cost in t

> Repeat Problem 71 if the monthly fixed costs increase to $27,200, the variable costs increase to $9.15, and the company raises the selling price of the DVDs to $21.95 Data from 71: A company markets exercise DVDs that sell for $19.95, including shipping

> Repeat Problem 69 with the cost and revenue equations Data from problem 69: A small plant manufactures riding lawn mowers. The plant has fixed costs (leases, insurance, etc.) of $48,000 per day and variable costs (labor, materials, etc.) of $1,400 per u

> At $2.13 per bushel, the annual supply for corn in the Midwest is 8.9 billion bushels and the annual demand is 6.5 billion bushels. When the price falls to $1.50 per bushel, the annual supply decreases to 8.2 billion bushels and the annual demand increas

> Suppose that the supply and demand for printed baseball caps for a particular week are /where p is the price in dollars and q is the quantity in hundreds. (A) Find the supply and demand (to the nearest unit) if baseball caps are $4 each. Discuss the s

> Repeat Problem 63 for the following systems: (A) 6x - 5y = 10 -13x + 11y = -20 (B) 6x - 5y = 10 -13x + 10y = -20 (C) 6x - 5y = 10 -12x + 10y = -20 Data from Problem 63: The coefficients of the three systems given below are similar. One might gue

> Graph the equations in the same coordinate system. Find the coordinates of any points where two or more lines intersect. Is there a point that is a solution to all three equations?

> Refer to the table in the graphing calculator display below, which shows y1 = nPr and y2 = nCr for n = 6. Explain how the table illustrates the formula nPr = r!nCr

> Graph the equations in the same coordinate system. Find the coordinates of any points where two or more lines intersect. Is there a point that is a solution to all three equations?

> Use a graphing calculator to find the solution to each system. Round any approximate solutions to three decimal places.

> Problems are concerned with the linear system. If m = 0, how many solutions does the system have?

> Problems are concerned with the linear system. If the system has no solution, discuss the relationships among the four constants.

> In a free competitive market, if the demand for a good is greater than the supply, will the price tend to go up or come down?

> Note that each solution can be found mentally, without the use of a calculator or pencil-andpaper calculation; try to visualize the graphs of both lines.

> Three departments have 12, 15, and 18 members, respectively. If each department selects a delegate and an alternate to represent the department at a conference, how many ways can this be done?

> Note that each solution can be found mentally, without the use of a calculator or pencil-andpaper calculation; try to visualize the graphs of both lines.

> Solve Problem using substitution or elimination by addition.

> Solve Problem using elimination by addition.

> Solve Problems using substitution.

> From a standard 52-card deck, how many 5-card hands contain 5 different ranks of cards?

> Solve Problems using substitution.

> Solve Problems by graphing.

> Match each system in Below Problems with one of the following graphs, and use the graph to solve the system.

> Find the sum of the finite geometric series a + ar + ar2 + â¦+ arn 1 -. Write the answer as a quotient of integers.

> Use graphical approximation techniques or an equation solver to approximate the desired interest rate. Express each answer as a percentage, correct to two decimal places. At the time they retire, a couple has $200,000 invested in an annuity. The couple c

> Use graphical approximation techniques or an equation solver to approximate the desired interest rate. Express each answer as a percentage, correct to two decimal places. A $2,000 computer can be financed by paying $100 per month for 2 years. What is the

> From a standard 52-card deck, how many 4-card hands consist of cards from the same suit?

> Discuss the similarities and differences in the graphs of unpaid balance as a function of time for 30-year mortgages of $60,000 at rates of 7%, 10%, and 13%, respectively (see the figure). Include computations of the monthly payment and total interest pa

> A person purchased a $200,000 home 20 years ago by paying 20% down and signing a 30-year mortgage at 13.2% compounded monthly. Interest rates have dropped and the owner wants to refinance the unpaid balance by signing a new 10-year mortgage at 8.2% compo

> A person purchased a house 10 years ago for $160,000. The house was financed by paying 20% down and signing a 30-year mortgage at 7.75% on the unpaid balance. Equal monthly payments were made to amortize the loan over a 30- year period. The owner now (af

> An ordinary annuity pays 6.48% compounded monthly. (A) A person wants to make equal monthly deposits into the account for 15 years in order to then make equal monthly withdrawals of $1,500 for the next 20 years, reducing the balance to zero. How much sh

> Refer to Problem 55. If the account owner decides to withdraw $3,000 monthly, how much is in the account after 10 years? After 20 years? After 30 years? Data from Problem 55: An ordinary annuity that earns 7.5% compounded monthly has a current balance o

> At the time they retire, a couple has $200,000 in an account that pays 8.4% compounded monthly. (A) If the couple decides to withdraw equal monthly payments for 10 years, at the end of which time the account will have a zero balance, how much should the

> A family has a $210,000, 20-year mortgage at 6.75% compounded monthly. Find the monthly payment. Also find the unpaid balance after (A) 5 years (B) 10 years (C) 15 years

> A person establishes a sinking fund for retirement by contributing $7,500 per year at the end of each year for 20 years. For the next 20 years, equal yearly payments are withdrawn, at the end of which time the account will have a zero balance. If money i

> A family is thinking about buying a new house costing $120,000. The family must pay 20% down, and the rest is to be amortized over 30 years in equal monthly payments. If money costs 7.5% compounded monthly, what will the monthly payment be? How much tota

> A man establishes an annuity for retirement by depositing $50,000 into an account that pays 7.2% compounded monthly. Equal monthly withdrawals will be made each month for 5 years, at which time the account will have a zero balance. Each year taxes must b

> From a standard 52-card deck, how many 7-card hands consist of 3 hearts and 4 diamonds?

> Construct the amortization schedule for a $10,000 debt that is to be amortized in six equal quarterly payments at 2.6% interest per quarter on the unpaid balance.

> A recreational vehicle costs $80,000. You pay 10% down and amortize the rest with equal monthly payments over a 7-year period. If you pay 9.25% compounded monthly, what is your monthly payment? How much interest will you pay?

> You want to purchase an automobile for $28,500. The dealer offers you 0% financing for 60 months or a $6,000 rebate. You can obtain 6.2% financing for 60 months at the local bank. Which option should you choose? Explain.

> Refer to the following ads. The ad for a Bison SUV claims that a monthly payment of $399 constitutes 0% financing. Explain why that is false. Find the annual interest rate compounded monthly that is actually being charged for financing $23,997 with 72 m

> Assume that no new purchases are made with the credit card. The annual interest rate on a credit card is 22.99%. If the minimum payment of $25 is made each month, how long will it take to pay off an unpaid balance of $860.22?

> Assume that no new purchases are made with the credit card. The annual interest rate on a credit card is 24.99%. If a payment of $100.00 is made each month, how long will it take to pay off an unpaid balance of $2,487.56?

> If you buy a computer directly from the manufacturer for $3,500 and agree to repay it in 60 equal installments at 1.75% interest per month on the unpaid balance, how much are your monthly payments? How much total interest will be paid?

> E-Loan offers a 36-month auto loan at 9.84% compounded monthly to applicants with fair credit ratings. If you have a fair credit rating and can afford monthly payments of $350, how much can you borrow from E-Loan? What is the total interest you will pay

> American General offers a 7-year ordinary annuity with a guaranteed rate of 6.35% compounded annually. How much should you pay for one of these annuities if you want to receive payments of $10,000 annually over the 7-year period?

> Explain why the last payment in an amortization schedule might differ from the other payments.

> From a standard 52-card deck, how many 5-card hands consist entirely of queens?

> Solve the present value formula (5) for n

> Use formula (5) or (6) to solve each problem. PV = $12,000; PMT = $400; n = 40; i = ? (Round answer to three decimal places.)

> Use formula (5) or (6) to solve each problem. PV = $20,000; i = 0.0175; PMT = $500; n = ?

> Use formula (5) or (6) to solve each problem. PV = $14,000; n = 72; i = 0.005; PMT = ?

> Use formula (5) or (6) to solve each problem. n = 40; i = 0.01; PMT = $400; PV = ?

> Find i (the rate per period) and n (the number of periods) for each loan at the given annual rate. Monthly payments of $433 are made for 3 years to repay a loan at 10.8% compounded monthly.

> Find i (the rate per period) and n (the number of periods) for each loan at the given annual rate. Quarterly payments of $610 are made for 6 years to repay loan at 8.24% compounded quarterly.

> Find i (the rate per period) and n (the number of periods) for each loan at the given annual rate. Annual payments of $1,045 are made for 5 years to repay a loan at 4.75% compounded annually.

> Find i (the rate per period) and n (the number of periods) for each loan at the given annual rate. Semiannual payments of $3,200 are made for 12 years to repay a loan at 9.9% compounded semiannually.

> Find i (the rate per period) and n (the number of periods) for each annuity. Monthly deposits of $350 are made for 6 years into an annuity that pays 6% compounded monthly.

> From a standard 52-card deck, how many 6-card hands consist entirely of clubs?

> Find the sum of the finite geometric series a + ar + ar2 + …+ arn - 1 . a = 4, r = 10, n = 6

> Find the sum of the finite geometric series a + ar + ar2 + …+ arn - 1 . a = 25, r = -1, n = 81

> Find the sum of the finite geometric series a + ar + ar2 + …+ arn - 1 . 1 + 5 + 25 + 125 + …+ 58

> use graphical approximation techniques to answer the questions. When would an ordinary annuity consisting of monthly payments of $200 at 5% compounded monthly be worth more than a principal of $10,000 invested at 7.5% compounded monthly?

> Use graphical approximation techniques or an equation solver to approximate the desired interest rate. Express each answer as a percentage, correct to two decimal places. An employee opens a credit union account and deposits $90 at the end of each month.

> Use graphical approximation techniques or an equation solver to approximate the desired interest rate. Express each answer as a percentage, correct to two decimal places. A person invests $2,000 annually in an IRA. At the end of 6 years, the amount in th

> A company establishes a sinking fund for upgrading office equipment with monthly payments of $2,000 into an account paying 6.6% compounded monthly. How long will it be before the account has $100,000? (Round up to the nexthigher month if not exact.)

Question: Evaluate the expression. If the answer is