Simplify. Assume that all variables represent positive numbers.
A. x + 9
B. 
+ 3
C. x2 + 18x + 81
D. x + 3
Answer: A
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Use implicit differentiation to find dy/dx and d2y/dx2.4
- y = 2x
A. 
= 
- 2; 
= - 
B. 
= 
; 
= 
C. 
= 
; 
= 
D. 
= 
; 
= 
Change the following number to a power of ten notation of 103: 337
a. 3.37 ð 103 b. 33.7 ð 103 c. 337 ð 103 d. Ý337 ð 103
Graph the function. Show at least one period.y = 3 sin(5x - ?)
A. 
B. 
C. 
D. 
Solve the problem.A survey of the interest rates earned by Certificates of Deposit (CDs) showed the following percents for the length of time (in years) for holding the CD. Let length of time represent the independent variable and interest rate represent the dependent variable. Use a graphing utility to draw a scatter diagram and to find the line of best fit. What is the estimate of the interest rate for a CD held for 30 years (to the nearest thousandth)? 
A. 8.874 B. 9.064 C. 8.675 D. 8.669