A person invests 8000 dollars in a bank. The bank pays 6.5% interest compounded quarterly. To the nearest tenth of a year, how long must the person leave the money in the bank until it reaches 10500 dollars?

2 answers

no steps, just the usual formula:

8000(1 + 0.065/4)^(4x) = 10500
4.2175 rounded to 4.2