Solve the problem.A sample of 400 g of lead-210 decays to polonium-210 according to the function given by 
where t is time in years. What is the amount of the sample after 60 years (to the nearest g)?
A. 43 g
B. 59 g
C. 2728 g
D. 167 g
Answer: B
Mathematics
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A. 9 B. 81 C. -9 D. diverges
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Integrate the function.
A. 1.956 B. 1.594 C. 0.9780 D. 3.912
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Express the number in scientific notation.870,000
A. 8.7 × 105 B. 8.7 × 104 C. 8.7 × 10-4 D. 8.7 × 10-5
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Find the value of the expression.log3 
A. 3 B. 6 C. -2 D. 1/2
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