Solve. Give an exact answer unless indicated otherwise.Given that sin 
? 0.9511 and cos 
? 0.3090, find 
Round to four decimal places.
A. 0.7968
B. 0.3249
C. 1.0514
D. 1.4526
Answer: C
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Use a special product formula to simplify.(-2x - 3)2
A. 4x2 + 9 B. -2x2 + 9 C. 4x2 + 12x + 9 D. -2x2 + 12x + 9
Solve the problem.Sales of CD players in a particular U.S. market are shown in the given table for various years. Let s be the sales of CD players (in thousands) for the year that is t years since 1990. A quadratic model for the sales is 
According to the model, how many CD players were sold in 1997? Is this number an underestimate, an overestimate, or neither? CD Player Sales
A. 185 thousand; neither B. 275 thousand; overestimate C. 275 thousand; underestimate D. 200 thousand; overestimate
Add or subtract.
+ 
A. m + 4
B. 
C. m - 4
D. m - 2
Solve the logarithmic equation. Give an exact answer.log8(x + 2) - log8 x = 2
A. 
B. 
C. {8}
D. 