Divide.- 
÷ 
A. 
B. 
C. - 
D. - 
Answer: A
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Perform the indicated operations and simplify the result. Leave the answer in factored form.
+ 
+ 
A. 
B. 
C. 
D. 
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. 31.4%; $464 million B. 26.5%; $469 million C. 29.7%; $467 million D. 28.1%; $470 million
Determine an estimate of the exact answer. Use estimation by rounding.Jeremy drove for 143.7 miles and used 16.5 gallons of gas. Estimate the number of miles his car gets per gallon by rounding both the number of gallons and the number of miles to the nearest ten.
A. 0.14 mpg B. 10 mpg C. 8 mpg D. 7 mpg
Write the system of equations in the matrix form 
.
What will be an ideal response?