Find fractional notation for the ratio. You need not simplify.Of a family's $819 weekly income, $82 usually goes toward groceries. What is the ratio of the amount spent on groceries to weekly income?
A. 
B. 
C. 
D. 
Answer: B
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Write the equation of the line from the given information. Write the line in slope-intercept form.Slope = -3; y-intercept = -10
A. y = -10x + 3 B. y = -10x - 3 C. y = -3x - 10 D. y = -3x + 10
Find the ordinary interest or exact interest as specified. Round to the nearest cent.Robert Hall bought a new computer system. To pay for the system, he borrowed $5470 from the credit union at 8
% interest for 125 days. Find the ordinary interest owed.
A. $164.86 B. $166.19 C. $163.91 D. $478.63
Evaluate the logarithm without the use of a calculator.log7 
A. 
B. - 
C. 7
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. 35.8%; $209 million B. 34.9%; $207 million C. 39.6%; $209 million D. 37.5%; $210 million