If 7800 is invested at 5.2 interest compounded monthly, how much will the investment be worth in 11 years

By using the compound interest formula we have:


Where A(t) is your final amount, p is the principal amount r is the rate in decimals n is the amount of times compounded and t is time. But plunging in our values P=7800, r=0.052, t=11, n=12 (12 months in 1 year). we have:

For a 0.25 pfor b o.3pp (0.25+0.3)=0.28