Multiply the binomials using FOIL.(4x + 4)(4x - 9)
A. 16x2 - 20x - 20
B. 8x2 - 20x - 20
C. 16x2 - 20x - 36
D. 8x2 - 20x - 36
Answer: C
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Find the slope of the line through the pair of points.(-5, -6) and (-3, 1)
A. - 
B. 
C. - 
D. 
Graph the function.f(x) = 4x
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B. 
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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. 36.6%; $268 million B. 35.8%; $276 million C. 41.2%; $264 million D. 34.0%; $271 million
Set up the percent proportion, and write "unknown" for the value that is not given. Recall that the percent proportion is 
= 
. Do not try to solve for any unknowns.What is 7% of 87?
A. 
= 
B. 
= 
C. 
= 
D. 
= 