please answer for a,b,c, and d

Waiting period. Jamal is waiting to be a millionaire. He wants to know how long he must wait if a. he invests $24,766.15 at 19% today? b. he invests $52,879.55 at 13% today? c. he invests $154,517.95 at 8% today? d. he invests $265,275.97 at 5% today? a. How long will Jamal have to wait to become a millionaire if he invests $24,766.15 at 19% today? years (Round to the nearest whole number.)