Simplify the expression. Assume that all variables represent positive real numbers.815/4
A. 6561
B. 19,683
C. 243
D. 2187
Answer: C
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Convert between English and Metric System of Units.
38 in. = 
cm (Round to the nearest hundredth.)
A. 14.96 B. 125.40 C. 3.17 D. 96.52
Solve the equation.3x3 + 28x2 + 32x = 0
A. 
B. 
C. 
D. 
An object attached to a coiled spring is pulled down a distance a from its rest position and then released. Assuming that the motion is simple harmonic with period T, write an equation that relates the displacement d of the object from its rest position after t seconds. Also assume that the positive direction of the motion is up.a = 6;
T = 4 seconds
A. d = -6 sin 
B. d = -6 cos 
C. d = -6 cos 
D. d = -4 cos 
If x = 4 cot ?, use trigonometric substitution to write 
as a trigonometric function of ?, where 0 < ?< ?.
A. ?4 cos ? B. ?4 csc ? C. ?4 cot ? D. ?4 sec ? E. ?4 sin ?