Question 1091947
The annual interest rate is 7.83%. So:
10000=3900(1+0.078)^y, where y is the number of years to maturity. So:
10000/3900=1.078^y
2.5641025641025641025641025641026=1.078^y
ln 2.5641025641025641025641025641026=1.078^y=y ln 1.078
y=12.5368 years before the account reaches 10000
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