Use reference angles to find the exact value of the expression. Do not use a calculator.sin 
A. -1
B. 
C. - 
D. - 
Answer: D
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Solve the problem.Cathy May deposits $15,000 at the end of each year for 13 years in an account paying 4% compounded annually. She then puts the total amount on deposit in another account paying 5% compounded semiannually for another 
. Find the final amount on deposit after the entire 
period. Round your answer to the nearest cent.
A. $319,256.37 B. $661,739.25 C. $408,675.14 D. $370,599.09
Find the value of df-1/dx at x = f(a).f(x) = 4x + 6, a = 4
A. 
B. 
C. 4
D. 6
Solve the initial value problem.
= 
+ 5, y(4) = 5
A. y = 
+ 5x - 
B. y = 
+ 5x + 27
C. y = 
+ 5x - 
D. y = 
+ 5x - 17
Solve the problem.The table lists the amount of emissions of a certain pollutant in millions of tons.
If the amount of emissions is modeled by a function of the form 
where x is the year, estimate the amount of emissions in the year 2025.
A. 43.8 million tons B. 38.6 million tons C. 34.0 million tons D. 41.7 million tons