Solve the problem.If an object is dropped from a tower, then the velocity, V (in feet per second), of the object after t seconds can be obtained by multiplying t by 32 and adding 10 to the result. Find V as a linear function of t, and use this function to evaluate V(8.8), the velocity of the object at time 
A. V(8.8) = 292.9 feet per second
B. V(8.8) = 289.6 feet per second
C. V(8.8) = 290.9 feet per second
D. V(8.8) = 291.6 feet per second
Answer: D
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Solve the problem.Given the velocity and initial position of a body moving along a coordinate line at time t, find the body's position at time t.v = -13t + 6, s(0) = 13
A. s = -
t2 + 6t - 13
B. s= 
t2 + 6t - 13
C. s = -
t2 + 6t + 13
D. s = -13t2 + 6t + 13
Use integration by parts to establish a reduction formula for the integral.
, n ? 1
A. 
= 
cotn-1 x - 
B. 
= - cotn-1 x + 
C. 
= 
cotn-2 x - 
D. 
= 
cotn-1 x + 
Evaluate the surface integral of the function G over the surface S.G(x, y, z) = x2y2z2; S is the surface of the rectangular prism formed from the planes x = ±3, y = ±1, and 
A. 135 B. 405 C. 270 D. 9
Solve the problem.The function A = A0e-0.01386x models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. If 400 pounds of the material are initially put into the vault, how many pounds will be left after 140 years?
A. 312 lb B. 57 lb C. 560 lb D. 71 lb