a principal of $3900 is invested at 7.25% interest, compounded annually. how much will the investment be worth after 11 years?

Total after 11 years: $46,010.25

Just interest after 11 years: $3,110.25

Step-by-step explanation:

Multiply 3900 by 0.0725, which is the decimal version of 7.25%

3900*0.0725=282.75

Add that interest (which is interest for one year) to the 3900. You get 4182.75. That is one year of the principle and interest combined.

Multiply this by 11.

11*4182.75 = 46,010.25

If you need to find just the amount of interest over 11 years, multiply the 282.75, which we found earlier, by 11.

282.75*11=3110.25