Evaluate the expression.Let x = 18, y = -6. Evaluate |y - x|.
A. -12
B. -24
C. 24
D. 12
Answer: C
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Solve the problem and write the answer using scientific notation.Assume that the volume of the earth is 5 × 1014 cubic meters and the volume of a bacterium is 
cubic meters. If the earth could be filled with bacteria, how many would it contain?
A. 5.0 × 10-31 bacteria B. 2.0 × 10-30 bacteria C. 2.0 × 1030 bacteria D. 5.0 × 1031 bacteria
Find the inverse using composition.f(x) = -x2 + 20, x ? 0
A. f-1(x) = 
B. f-1(x) = - 
C. f-1(x) = x2 + 20
D. f-1(x) = 
Perform the indicated operation.(5b2 + 8b - 1) - (-2b2 - 8)
A. 7b2 + 8b + 7 B. 7b2 + 16b - 1 C. 3b2 + 16b - 1 D. 3b2 + 8b - 9
Solve.A dart player made 88 bull's eyes out of 100 attempted throws. What percent of the throws were NOT bull's eyes?
A. 
%
B. 12%
C. 88%
D. 
%