A person invests 8000 dollars in a bank. The bank pays 5.25% interest compounded annually. To the nearest tenth of a year, how long must the person leave the money in the bank until it reaches 12700 dollars?

she should save it for minimum 9.1 years.

Explanation:

solve:

change sides

take ln on both sides

simplify

final answer

rounding to nearest tenth

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right