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Need solution. Please help.[Engineering Economics] A salesperson tells you that you can buy a car for $25,000 cash or you can pay $450 a month for 72 months. Calculate the monthly interest rate you are being charged if you choose to pay monthly. The formula for calculating the payment, A, over n payment periods on a present worth, P, at an interest rate of i is given by the following formula: A- P 1 )1 To solve this problem, first use Microsoft Excel to plot a graph of A as a function of i to find an approximate answer as a starting point, then use Bisection to refine the solution. Confirm your answer using Goal Seek.

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