Find an approximate value for the integral, using the trapezoidal rule with n intervals. Round the answer to the nearest tenth if necessary.
, n = 4
A. 
B. 
C. 
D. 
Answer: C
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Find y".y = 
4
A. - 
2 + 
3
B. 
2 + 
3
C. - 
3
D. 12 
2
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 = 20;
T = 4? seconds
A. d = -20 cos 
B. d = -20 sin 
C. d = -4 cos 
D. d = -20 cos 
Find the average rate of change of the function from x1 to x2.f(x) = 
from x1 = 2 to x2 = 8
A. 
B. - 
C. 2
D. 7
Solve.Greg sold his used lap top and accessories for $368. If he received three times as much money for the lap top as he did for the accessories, how much did he receive for the lap top?
A. $276 B. $92 C. $1104 D. $102