Decide whether the given number is a solution of the given equation. Is -12 a solution of 12 + x = 0 ?
A. Yes
B. No
Answer: A
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Multiply.-5(10)
A. -45 B. 40 C. -50 D. 50
Solve.Photography reprints cost $0.52 each at a local photo shop. Through the mail, they cost $0.44 each plus $1.20 postage and handling. How many reprints must a customer purchase to make it less expensive to use mail order?
A. {n|n > 19 reprints} B. {n|n > 18 reprints} C. {n|n > 15 reprints} D. {n|n > 16 reprints}
Use a graphing calculator or computer to determine which of the given viewing windows displays the most appropriate graph of the specified function.f(x) = x3 - 2x2 - 3x + 10
A. [-20, 20] by [-100, 100] B. [-5, 25] by [-5, 5] C. [-5, 5] by [-5, 25] D. [-2, 2] by [-10, 10]
Solve the problem.The sales in thousands of a new type of product are given by S(t) = 200 - 70e-.1t, where t represents time in years. Find the rate of change of sales at the time when 
A. -9.4 thousand per year B. -5.2 thousand per year C. 5.2 thousand per year D. 9.4 thousand per year