Find the slope and the y-intercept of the given line.y = -4x + 7
A. -4, (0, -7)
B. 7, (0, -4)
C. -7, (0, -4)
D. -4, (0, 7)
Answer: D
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Solve the problem.A computer manufacturer has three outlet stores that sell its four computer systems. The following table shows the numbers of systems sold by the three stores in July. 
The prices of the systems are: $1200 for System 1, $1500 for System 2, $1600 for System 3, and $2100 for System 4. Write the information from the table as a 4 x 3 matrix B. Write a row matrix A for which the entries represent the prices for the systems. If C = AB, find c11 . What does this entry of C represent?
A. c11 = 153,000. c11 represents the sales of System 2 at all stores in July. B. c11 = 173,000. c11 represents the total sales at Store 3 in July. C. c11 = 163,000. c11 represents the total sales at Store 1 in July. D. c11 = 185,000. c11 represents the total sales at Store 1 in July.
Solve the problem.A car rental company has two rental rates. Rate 1 is $30 per day plus $0.12 per mile. Rate 2 is $60 per day plus $0.06 per mile. If you plan to rent for one week, how many miles would you need to drive to pay less by taking Rate 2?
A. more than 3500 miles B. more than 7000 miles C. more than 12,250 miles D. more than 3600 miles
Solve the problem.During a cold front in Alaska the temperature dropped 7°F each hour for 8 hours. Express the total drop in temperature as an integer.
A. 56°F B. -49°F C. -46°F D. -56°F
Form a polynomial whose zeros and degree are given. Use a leading coefficient of 1. Zeros: 0, - 6, 5; degree 3
A. f(x) = x3 + x2 + x + 30 B. f(x) = x3 + x2 + x - 30 C. f(x) = x3 + x2 + 30x D. f(x) = x3 + x2 - 30x