Convert the equation to polar coordinates.y = 2
A. sin ? = 2
B. r = 
C. r = 
D. r = 2
Answer: C
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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. 8.669 B. 9.064 C. 8.874 D. 8.675
Use the distributive property to rewrite the algebraic expression without parentheses. Then simplify the result, if possible.3(9x + 3)
A. 27x + 9 B. 12x + 6 C. 36x D. 27x + 3
Graph the equation by plotting points.y = x3 
A. 
B. 
C. 
D. 
Solve the problem.Suppose a cost-benefit model is given by y = 
, where y is the cost in thousands of dollars for removing x percent of a given pollutant. Find the cost of removing 65%.
A. $3600 B. $6685 C. $2340 D. $1856