2. how much will be in your fund at age 65 if you saved $100 a month? 3. how much will be in your fund if you get a steady return of 10% componded monthly? (compared to the average annual return of about 11% for all stocks in the NY stock exchange from 1950-2000) Confuses me please help! 2. I hope I have the correct formula. But an IRA has its own formula.$\displaystyle A=P\left(\frac{(1+r)^{n}-1}{r}\right)$P=monthly deposit, r=interest rate, n=number of periods. For #2.$\displaystyle A=100\left(\frac{(1+\frac{.05}{12})^{(42)(12)}}{\f rac{.05}{12}}\right)=195,134.87\$