Use a sum or difference identity to find the exact value.tan 
A. 2 - 
B. 2 + 
C. -2 - 
D. -2 + 
Answer: D
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Solve the problem.At what times in the interval 0 ? t ? ? are the velocity and the acceleration vectors of the motion 
orthogonal?
A. t = 
B. t = 0; t = 
; t = ?
C. Velocity and acceleration vectors are orthogonal for all t in 0 ? t ? ?.
D. t = 0
Simplify.4log4(7)
A. 47 B. 4 C. 1 D. 7
Solve the inequality. Graph the solution set, and state the solution set in interval notation.|x - 7| + 8 ? 13
A. [2, 13]
B. (2, 12)
C. [2, 12]
D. ?
Solve the problem.The graph shows the annual revenue in millions of dollars of a cosmetics company.
(a) Use the graph to complete the table. 
(b) What was the average annual change in revenue?(c) What was the average annual revenue over the five-year period?
A. (a) 
(b) -$1,800,000
(c) $48,000,000
B. (a) 
(b) $600,000
(c) $43,200,000
C. (a) 
(b) $1,800,000
(c) $240,000,000
D. (a) 
(b) -$600,000
(c) $240,000,000