Betty invests $500 in an account that pays 3 percent simple interest. How much money will Betty have at the end of nine years? 5635 $135 $630 $150 $650 You're trying to save to buy a new $190.000 Ferrari. You have $38,000 today that can be invested at your bank. The bank pays 3.5 percent annual interest on all its accounts. How long will it be before you have enough to buy the car? 44.58 years 36.56 years 46.78 years 42.06 years