Solve the equation.
+ 2 = 8
A. -86
B. -84
C. 86
D. 84
Answer: D
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Solve.A prime number p such that 2p + 1 is also a prime number is called a Germain prime, named after the German mathematician Sophie Germain (1776-1831), who made major contributions to number theory. Determine whether or not the prime number 53 is a Germain prime.
A. Yes B. No
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. 28.8%; $272 million B. 30.9%; $382 million C. 27.0%; $379 million D. 38.4%; $383 million
Perform the indicated operation. Write the result in the form a + bi.(7 - 2i) + (6 + 9i)
A. 13 + 7i B. -13 - 7i C. 1 + 11i D. 13 - 7i
Use the Pythagorean theorem to find the unknown side of the right triangle.
A. 
B. 
C. 13
D. 169