Find the inverse of the function.f(x) = 
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
D. Not invertible
Answer: B
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What is the degree of the expression?(2 + 2x + 3x3)9
A. 13 B. 36 C. 18 D. 27
Solve the problem.Susan purchased some municipal bonds yielding 7% annually and some certificates of deposit yielding 9% annually. If Susan's investment amounts to $19,000 and the annual income is $1590, how much money is invested in bonds and how much is invested in certificates of deposit?
A. $13,500 in bonds; $5500 in certificates of deposit B. $5500 in bonds; $13,500 in certificates of deposit C. $13,000 in bonds; $6000 in certificates of deposit D. $6000 in bonds; $13,000 in certificates of deposit
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. 8.675 C. 8.874 D. 9.064
The pair of triangles is similar. Find the missing length.
A. 3.75 B. 96 C. 0.375 D. 9.6