C=πd
r=21
d=42
C=132 ft, and D is your final answer. Hope it help!
Exponential functions have a horizontal asymptote. The equation of the horizontal asymptote is
y=0.
Half life = 1250 years
Start amount = 36
End amount = 15
Time = ?
15 = 36 * (1/2)^(x/1250)
0.417 = (1/2)^(x/1250)
ln(0.417) = x/1250 * ln(1/2)
x = 1577.95 years
Step-by-step explanation:
of what where is the question
