Solve the problem.You decide to put in a large sidewalk around a garden which measures 2 feet by 3 feet. The dimensions of the combined sidewalk/garden are to be 6 feet. by 10 feet. What is the area of the sidewalk only?
A. 6 sq. ft
B. 28 sq. ft
C. 60 sq. ft
D. 54 sq. ft
Answer: D
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Graph.f(x) = 
x2 - 3x + 2
A. 
B. 
C. 
D. 
Round the whole number to its highest place value.598
A. 500 B. 700 C. 590 D. 600
Find the slope and the y-intercept of the line.y = 
x
A. m = 0; b = 
B. m = 1; b = 0
C. m = 4; b = 
D. m = 
; b = 0
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