Find the savings after 3 years with an APR of 4% and monthly payments of 300.

Use this formula to find the FV:

 

P=300;   R=0.04/12;  N=3*12;    FV=P*((1 + R)^N - 1)/ R

 

FV = $ 11,454.47 - FV of the account after 3 years.

 

Note: I took 4% APR as compounded monthly.