3.A new Grady White fishing boat cost $5000 in 1979. Today, thevery same boat costs around $40,000.

3.A new Grady White fishing boat cost $5000 in 1979. Today, thevery same boat costs around $40,000. Estimate the average annualinflation rate, using the Rule of 72. 4.You invest $2000 today andexpect ot earn 9% per year. how many years will it take for yourinvestment to grow to $32,000