Establish the identity.(tan v + 1)2 + (tan v - 1)2 = 2 sec2v
What will be an ideal response?
(tan v + 1)2 + (tan v - 1)2 = tan2v + 2 tan v + 1 + tan2v - 2 tan v + 1 = 2(tan2v + 1) = 2 sec2v
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Express the sum in sigma notation.1 - 4 + 16 - 64 + 256
A. 
4k + 1
B. 
4k
C. 
4k
D. 
Solve the problem.The manufacturer of a CD 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. $71,556 B. $572,450 C. $143,113 D. $286,225
A pair of similar triangles is shown. Find the measure of the segment marked with the letter x.
A. x = 12 B. x = 7 C. x = 21 D. x = 28
Find anand a6 for the following arithmetic sequence.2, 6, 10, 14, 18
A. an = 4n - 1; a6 = 23 B. an = 2(4)n-1; a6 = 8 C. an = 2n - 4; a6 = 8 D. an = 2(2n - 1); a6 = 22