Find the nth term an of the geometric sequence.-2, -4, -8, -16, -32, . . .
A. an = (-2)(2n)
B. an = (-2)(2)n-1
C. an = (-2)(2)n
D. an = a1 + 2n
Answer: B
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Find the limit of the sequence or determine that the limit does not exist.an = 
A. e2 B. 0 C. ln 2 D. does not exist
Find the square root.
A. 23 B. 25 C. 26 D. 24
Find the indicated term for the arithmetic sequence.a18 = -39, a13 = -29; a3
A. -9 B. -2 C. -5 D. -11
Solve the problem.A boy is flying a model airplane while standing on a straight line. The plane, at the end of a twenty-five foot wire, flies in circles around the boy. The directed distance of the plane from the straight line is found to be d = 25 cos 
where d is measured in feet and t is the time in seconds. If d > 0, the plane is in front of the boy; if d < 0, the plane is behind him. What is the amplitude? What is the period? Graph d over two periods beginning at t = 0. 
What will be an ideal response?