Graph the polynomial function. f(x) = x4 - 9x2
A. 
B. 
C. 
D. 
Answer: A
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Refer to a normal distribution described by the following figure. The mean is ? and the standard deviation is ?.
The standard deviation ? =
A. 80 B. 108 C. 54 D. 27 E. none of these
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
Find the slope of the line that passes through the given two points. If the slope is undefined, state this.(6, 5) and (11, -2)
A. - 
B. 
C. Undefined
D. 0
Multiply.(-2x4y)(-8x2y5)
A. -10x6y5 B. -16x6y5 C. 16x6y6 D. 16x8y5