Factor.r2 + 12r + 36
A. (r - 6)2
B. (r + 6)(r - 6)
C. (r + 6)2
D. (r + 12)(r - 12)
Answer: C
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Provide an appropriate response.Prove that the function f is not one-to-one.f(x) = 
- 2
What will be an ideal response?
Solve. Express the answer in scientific notation to two decimals unless requested otherwise.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? Round to one decimal place.
A. 5.0 × 10-31 bacteria B. 2.0 × 10-30 bacteria C. 2.0 × 1030 bacteria D. 5.0 × 1031 bacteria
Find the exact value of the expression.
A. - 
B. -2
C. - 
D. -
Solve the problem.Ms. Patterson proposes to give her daughter Claire an allowance of $0.10 on the first day of her 12-day vacation, $0.20 on the second day, $0.40 on the third day, and so on. Write an equation of a sequence whose terms correspond to Claire's potential allowance. Find the allowance Claire would receive on the last day of her vacation.
A. an = 0.10(2)n-1; $204.80 B. an = 0.10 + 2n-1; $2048.10 C. an = 0.10n; $1.20 D. an = 0.10(2)n; $409.60