What is the price of a 3-year savings certificate worth $5000 three years from now, at 12% interest, compounded continuously? A farmer must borrow $20,000 to purchase a tractor. The bank has offered the following choice of payment plans, each determined by using an interest rate of 8%. If the farmer's minimum attractive rate of return (MARR) is 15%, which plan should be choose? (Use Present worth analysis) Plan A: $5010 per year for 5 years Plan B: $2956 per year for 4 years plus $15000 at the end of 5 years Plan C: Nothing for 2 years, then $9048 per year for 3 years