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. 29.7%; $467 million
B. 26.5%; $469 million
C. 28.1%; $470 million
D. 31.4%; $464 million
Answer: B
Mathematics
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A. 0 B. 1 C. -2 D. -1
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Graph the exponential function.f(x) = 4x + 1
A. 
B. 
C. 
D. 
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First, use front end rounding to estimate each answer. Then find the exact answer.
+ 
What will be an ideal response?
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Factor completely. If the polynomial cannot be factored, write "prime."216 - 343t3
A. (6 + 7t)(36 - 42t + 49t2) B. (6 - 7t)(36 + 49t2) C. (6 - 7t)(36 + 42t + 49t2) D. (216 - 7t)(1 + 42t + 49t2)
Mathematics