Find the sum of the n terms of the indicated arithmetic sequence.-1, - 
, -2, . . . ; n = 10
A. -32.5
B. -37.5
C. 17.5
D. -35
Answer: A
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Solve the problem.A vertical right circular cylindrical tank measures 
high and
diameter. It is full of oil weighing 
. How much work does it take to pump the oil to the level of the top of the tank? Give your answer to the nearest ft ? lb.
A. 5,428,672 ft ? lb B. 1,357,168 ft ? lb C. 2,714,336 ft ? lb D. 22,619 ft ? lb
Find the average velocity of an object which follows the position function s(t) over the given interval.s(t) = 7t3 + 8t2 - 1, [-8, -4]
A. 
B. - 
C. - 688
D. 688
Find the volume of the indicated region.the region in the first octant bounded by the coordinate planes and the planes 
, 
A. 
B. 
C. 
D. 
Solve for x in the proportion. If possible, reduce the known fraction first.
= 
A. x = 2496
B. x = 
C. x = 53
D. x = 36