Find the exact value of the trigonometric expression without the use of a calculator.sin
A. 
B. 0
C. 1
D. 
Answer: C
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Solve the problem.Larry has $2000 to invest and needs $2400 in 12 years. What annual rate of return is required for him to accomplish his goal, if interest is compounded continuously? Round your answer to two decimal places.
A. 3.49% B. 1.49% C. 2.49% D. 1.52%
Decide whether the ordered pair is a solution of the given system.(3, -4)x + y = -7x - y = 1
A. No B. Yes
The bar graph shows the expenditures of one city government in a recent year. 
How much more is spent on Health than on Fire?
A. $2.4 million B. $1.1 million C. $4.3 million D. $2.6 million
Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = -x2 + 2x + 8
A. Increasing on (- 1, ?); decreasing on (-?, - 1) B. Increasing on (-?, - 1); decreasing on (- 1, ?) C. Increasing on (-?, 1); decreasing on (1, ?) D. Increasing on (1, ?); decreasing on (-?, 1)