Rewrite as a base to a power, if possible.93 ? 92
A. 816
B. 96
C. 815
D. 95
Answer: D
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A formula is given, along with values for all but one of the variables in the formula. Find the value of the variable that is not given. Round to the nearest hundredth when necessary.A = ?r2; r = 3, ? = 3.14
A. A = 29.58 B. A = 28.26 C. A = 9.42 D. A = 6.14
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. 27.0%; $379 million B. 30.9%; $382 million C. 28.8%; $272 million D. 38.4%; $383 million
Factor the expression completely. If the polynomial is prime, state this as your answer.z6 + 10z3 + 25
A. (z3 + 5)2 B. (z3 - 5)2 C. (z3 - 5)(z3 + 5) D. prime
Graph the ellipse and locate the foci.
+ 
= 1
A. foci at (0, 
) and (0, -
)
B. foci at (
, 0) and (-
, 0)
C. foci at (4, 0) and (-4, 0)
D. foci at (5, 0) and (-5, 0)