Simplify the expression.
- 
A. -cos x
B. sin x
C. -sin x
D. cos x
Answer: A
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Solve the problem.The value of a particular investment follows a pattern of exponential growth. In the year 2000, you invested money in a money market account. The value of your investment t years after 2000 is given by the exponential growth model A = 9400e0.057t. How much did you initially invest in the account?
A. $9951.36 B. $4700.00 C. $535.80 D. $9400.00
Use the fact that 
to evaluate the expression without using a calculator.
?
?
A. 316,200 B. 316.2 C. 31.62 D. 31,620 E. 3,162,000
Solve the problem.A recipe for cookies calls for 
cups of flour. If the recipe is for 3 dozen cookies, how much flour is needed for 10 dozen cookies?
A. 21
c
B. 25 c
C. 30 c
D. 75 c
Solve the problem.What is the y-intercept of y = sec x?
A. 0
B. 1
C. 
D. none