what interest rate is needed to turn $2500 into $15,000 in 14 years if interest is compounded weekly?

0.6845% per week.

Step-by-step explanation:

Simple Interest Calculation A = P (1 + rt)

Solving our equation:

r = (1/730.5) ((15000/2500) - 1) = 0.00684463

r = 0.00684463

Converting r decimal to R a percentage

R = 0.00684463 * 100 = 0.6845%/week

Calculating the annual rate

0.6845%/week * 52 weeks/year = 35.594%/year.

The interest rate required to get a total amount, principal plus interest, of $15,000.00 from simple interest on a principal of $2,500.00 over 14.05 years (730.5 weeks) is 0.6845% per week.