Waiting period. Jamal is waiting to be a millionaire. He wants to know how long he must wait if a. he invests $27,511.28 at 18% today? b. he invests $53,802.38 at 13% today? c. he invests $121,474.01 at 10% today? d. he invests $323,335.15 at 5% today? a. How long will Jamal have to wait to become a millionaire if he invests $27,511.28 at 18% today? | years (Round to the nearest whole number.)