Answer:
23.02 years
Step-by-step explanation:
The expression that describes the future value of an investment (P) at an annual rate (r) for a period of n years, compounded annualy is:

If Rachel wants to accumulate $6,500 with an investment of $1,700 at 6% per year, the length of her investment, in years, must be:

It will take Rachel roughly 23.02 years to accumulate $6,500.