Find the average rate of change for the function between the given values.f(x) = 4x2; from 0 to 
A. - 
B. 7
C. 
D. 2
Answer: B
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Use a tree diagram to answer the question.A family has 4 children. Using a tree diagram that shows how many ways the children could have been born, from first born to last born, determine how many ways the family could have had 2 boys and 2 girls.
A. 8 B. 1 C. 5 D. 6
Find the GCF of the given numbers.80, 200
A. 5 B. 40 C. 20 D. 8
Find the indicated probability.The following contingency table provides a joint frequency distribution for a group of retired people by career and age at retirement. Age at Retirement 
Suppose one of these people is selected at random. Compute the probability that the person selected was a store clerk.
A. 0.259 B. 0.316 C. 0.026 D. 0.099
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