Solve the problem.Suppose that the amount in grams of a radioactive substance present at time t (in years) is given by A(t) = 630e-0.88t. Find the rate of change of the quantity present at the time when t = 6.
A. 2.8 grams per year
B. 193.2 grams per year
C. -193.2 grams per year
D. -2.8 grams per year
Answer: D
Mathematics
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A. {5, 13} B. {6, 8, 10, 12} C. {5, 9, 13} D. {5, 7, 9, 11, 13}
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A. 27 B. -23 C. -27 D. 23
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Convert to fractional notation.20%
A. 
B. 
C. 
D. 
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