Find the indicated term of the sequence.an = (-1)n-1(5.4n - 17.5); a10
A. -36.5
B. 71.5
C. -71.5
D. -54
Answer: A
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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 solid generated by revolving the shaded region about the given axis.About the y-axis
A. 98? B. 168? C. 84? D. 21?
Find the domain of the function.f(x) = 
A. {x|x ? -12} B. {x|x > -12} C. {x|x ? 0} D. all real numbers
Solve the problem.A formula for calculating the distance, d, one can see from an airplane to the horizon on a clear day is 
where x is the altitude of the plane in feet and d is given in miles. How far can one see in a plane flying at 21,000 feet? Round your answer to the nearest tenth mile, if necessary.
A. 1281 miles B. 160.1 miles C. 12,810 miles D. 176.8 miles