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Start the planA. \(1.2 \times 10^{12}\)
B. \(8.1 \times 10^{12}\)
C. \(8.1 \times 10^{13}\)
D. \(1.5 \times 10^{22}\)
E. \(1.2 \times 10^{24}\)
Answer: C
Source: Princeton Review














