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. 36.6%; $268 million
B. 34.0%; $271 million
C. 41.2%; $264 million
D. 35.8%; $276 million
Answer: A
Mathematics
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Perform the indicated operation and simplify.
+ 
+ 
A. 
B. 
C. 
D. 
Mathematics
Suppose you have the following project digraph. (The numbers in parentheses represent hours.)
The length of the critical path for the entire project is
A. 18 hours. B. 26 hours. C. 21 hours. D. 17 hours. E. none of these
Mathematics
Simplify by taking the roots of the numerator and the denominator. Assume all variables represent positive numbers.
A. 6x
B. 6x
C. 6x
D. x
Mathematics
Provide an appropriate response.Write an expression that illustrates the quantity described.The cost of z pounds of candy that sell for $3.24 per pound.
A. $3.24z B. $3.25z C. $3.24 D. $z
Mathematics