Grace borrows $35,000 to start up an engineering consulting business. She must repay $859 per month for 4 years in order to pay off the loan. Using annual interest rates of 6, 7, 8, 9, 10, and 11 compounded monthly, plot the present value (determined for each interest rate) versus the annual interest rate. Identify on the plot the annual interest rate for this loan. Verify your answer (and show your work) by substituting the effective interest rate into the equation for the formula for present value from payment (uniform series).