How long will it take $500 to double if it earns the following rates? Compounding occurs once a year. Round your answers to two decimal places. a. 6%. year(s) b. 9%. year(s) c. 17% year(s) d. 100%. year(s) Find the present values of these ordinary annuities. Discounting occurs once a year. Do not round intermediate calculations. Round your answers to the nearest cent. a. $700 per year for 14 years at 4%. b. $350 per year for 7 years at 2%. $ c. $1,000 per year for 7 years at 0%. $ d. Rework previous parts assuming they are annuities due. Present value of $700 per year for 14 years at 4%:$ Present value of $350 per year for 7 years at 2%:$ Present value of $1,000 per year for 7 years at 0%:$ What is the present value of a $500 perpetuity if the interest rate is 7% ? If interest rates doubled to 14%, what would its present value be? Round your answers to the nearest cent. Present value at 7\%: $ resent value at 14%:$ You borrow $60,000; the annual loan payments are $3,469.81 for 30 years. What interest rate are you being charged? Round your answer to the nearest whole number. %