Simplify the expression. Assume all variables represent positive real numbers.
A. 5
B. 3
C. 3
D. 9
Answer: C
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Find the slope of the line tangent to the curve at the given value of x.f(x) = x3 - 2x; x = -4
A. 46 B. 14 C. 56 D. 48
Solve the problem.A plastic rod used in manufacturing boats must be rejected if it differs in length from the standard length, s, by 0.13 inches or more. If the length of a rod is denoted by l, engineers express this relationship as 
. What are the values of l for which the part will be rejected, if the standard length is 14.10 inches?
A. l ? 13.97 or l ? 14.23 B. l ? 13.95 or l ? 14.24 C. l ? 14.23 D. 13.97 ? l ? 14.23
Solve the problem.The position of a weight attached to a spring is s(t) = -5 cos 6?. What is the maximum height that the weight rises above the equilibrium position?
A. 5
B. 6
C. 
D. 0.83333333
Solve the problem.Edwin has a board that is 10 feet long. He wants to cut the board into pieces that are 2.5 feet long. How many 2.5-foot pieces will he get from the large board?
A. 5 pieces B. 3 pieces C. 40 pieces D. 4 pieces