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. 37.5%; $210 million
B. 39.6%; $209 million
C. 35.8%; $209 million
D. 34.9%; $207 million
Answer: B
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Solve the problem. Round your answer to 2 decimal places when necessary.The overall U.S. death rate for 60-62 year-olds is approximately 13 deaths per 1000 people. If there are about 14,954 60-62 year olds in a U.S. city, how many 60-62 year olds can be expected to die in a year in that city?
A. 1944 deaths B. 194 deaths C. 19 deaths D. 87 deaths
Determine if the series converges absolutely, converges, or diverges.
A. Converges absolutely B. Converges conditionally C. diverges
Tell whether the angle is acute, right, obtuse, or straight.
A. Obtuse B. Right C. Straight D. Acute
Solve.At Allied Electronics, production has begun on the X-15 Computer Chip. The total cost function is given by 
and the total profit function is given by 
where x represents the number of boxes of computer chips produced. The total revenue function, R(x), is such that 
Find R(x).
A. R(x) = 55x - 0.3x2 B. R(x) = 53x + 0.3x2 C. R(x) = 52x - 0.6x2 D. R(x) = 53x - 0.3x2