5. Find the exact and approximate (using the rule of 72) doubling time of an account with APR of 3% compounded monthly. Write your final answer in years. a. Doubling time via rule of 72 b. Exact doubling time

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5. Find the exact and approximate (using the rule of 72) doubling time of an account with APR of 3% compounded monthly. Write your final answer in years. 
a. Doubling time via rule of 72

b. Exact doubling time 

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