Rewrite the rational expression as an equivalent rational expression with the given denominator.
= 
A. 
B. 
C. 
D. 
Answer: C
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Find the limit.
A. 9
B. -9
C. 
D. ?
Use Cramer's rule to solve the system of linear equations. 9x - 4y = -4-2x - 2y = -2
A. (-1, 0) B. (1, 0) C. (0, -1) D. (0, 1)
Solve the problem.Economists use what is called a Leffer curve to predict the government revenue for tax rates from 0% to 100%. Economists agree that the end points of the curve generate 0 revenue, but disagree on the tax rate that produces the maximum revenue. Suppose an economist produces this rational function,
where R is revenue in millions at a tax rate of x percent. Use a graphing calculator to graph the function. What tax rate produces the maximum revenue? What is the maximum revenue?
A. 34.9%; $207 million B. 35.8%; $209 million C. 39.6%; $209 million D. 37.5%; $210 million
Find the integral.
