Solve the problem.If friction is ignored, the time t (in seconds) required for a block to slide down an inclined plane is given by the formula t = 
where a is the length (in feet) of the base and g ? 32 feet per second per second is the acceleration of gravity. How long does it take a block to slide down an inclined plane with base a = 10 when 
If necessary, round the answer to the nearest tenth of a second.
A. 1.5 sec
B. 1.2 sec
C. 2 sec
D. 0.3 sec
Answer: B
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Find the volume of the solid generated by revolving the region about the given axis. Use the shell or washer method.The region bounded by x = 6
, x = - 6y, and y = 1 about the line y = 1
A. 
?
B. 
?
C. 
?
D. 6?
Four players (A, B, C, and D) agree to divide a cake fairly using the lone divider method. The table below shows how each player values each of the four slices that have been cut by the divider.
Using the lone-divider method, how many different fair divisions of this cake are possible?
A. 0 B. 1 C. 2 D. 3 E. none of these
Find the length of the curve.The curve r = 7
, 0 ? ? ? 
A. 
(? + 2)
B. 
?
C. 2?
D. 7(? + ln(? + 
))
Use Cramer's rule to solve the linear system.-2x - 9y + 8z = -327x + 3y + 4z = 1014x - 9y - 2z = -28
A. (9, 6, 5) B. (6, 5, 6) C. (10, 4, 5) D. (9, -6, -5)