solve the equation for r: 127.63=100(r+1)^5

How are you going to determine the compound interest rate mathematically if future value = 127.63 and present value = 100
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Growth=127.63/100=1.2763=(1+r)^5. Take 5th root of both sides: 1.05=1+r, so 1+r=1.05 and r=0.05 or 5%.

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