Solve the problem.The decay of 279 mg of an isotope is given by A(t)= 279e-0.012t, where t is time in years. Find the amount left after 60 years.
A. 134 mg
B. 136 mg
C. 276 mg
D. 68 mg
Answer: B
Mathematics
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A. -3 B. 3 C. 6 D. -6
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What will be an ideal response?
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A. 
B. 
C. 
D. 
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Find the perimeter of the geometric figure.
A. 16k2 + 24x B. 8k2 + 6x + 6 C. 8k2 + 12x D. 16k2 + 12x + 12
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