I'm looking to doubling the $20,000 windfall If I can earn 5%. how long will it take for me to double my money? 13.96 years 14 21 years 14 4 years 20 00 years I received an offer in the mail for a new credit card The offer states that the credit card will charge 15% annual percentage rate If the credit card compounds monthly, what is the effective annual rate I will be paying on the crew card 16 08% 14 06% 15 72% 14.55%