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(nolho9 smol-ONsT SAT MEXE 4. (8 pt) Calculate the Annual Percentage Rate (APR) for each: a. One Lump Sum: Calculate the APR for a $2000 loan that is paid off in one lump sum at the end of the year. The stated annual interest rate is 15%. [Make sure to show your work] b. 12 Equal Monthly Payments: Calculate the APR for a $2000 loan that is paid off in 12 equal monthly payments. The stated annual interest rate is 15%. [Make sure to show your work]