Combine the k’s 17k
Combine the m’s -8m
Combine the n’s 12n
17k-8m+12n
85,000 * .05 =
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4,250.00
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2,916 is going to be your answer, they were all multiplied by 3 hope this helps!
Idk :) but the other guy answering might be able to help you. please give me a like!
The answer is 28 years
At = A0 * e^(-k * t)
At = 12 g
A0 = 15 g
k = 7.9 × 10^-3 = 0.0079
t = ?
12 = 15 * e^(-0.0079 * t)
12/15 = e^(-0.0079 * t)
0.8 = e^(-0.0079 * t)
Logarithm both sides (because ln(e) = 1:
ln(0.8) = ln(e^(-0.0079 * t))
ln(0.8) = (-0.0079 * t) * ln(e)
-0.223 = -0.0079 * t
t = -0.223 / -0.0079
t = 28.23
t ≈ 28 years
