Find the sum Sn of the first n terms of the geometric sequence.3, 
, 
, 
, . . . ; n = 8
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Write the series in summation notation. Use the index i and let i begin at 1 in each summation.2 + 7 + 12 + 17 + 22
A. 
B. 
C. 
D. 
Mathematics
Find the requested composition of functions.Given f(x) = 
and g(x) = 2x3, find g?f(x).
A. 
B. 
C. 
D. 
Mathematics
Find f(x) and g(x) such that h(x) = (f ? g)(x).h(x) = ?8x + 1?
A. f(x) = -?x?, g(x) = 8x + 1 B. f(x) = ?x?, g(x) = 8x + 1 C. f(x) = ?-x?, g(x) = 8x - 1 D. f(x) = x, g(x) = 8x + 1
Mathematics
Solve the problem.The manufacturer of a DVD player has found that the revenue R (in dollars) is 
when the unit price is p dollars. If the manufacturer sets the price p to maximize revenue, what is the maximum revenue to the nearest whole dollar?
A. $103,680 B. $829,440 C. $207,360 D. $414,720
Mathematics