QUESTION 17 10 points Save Answer "If the 1-year discount factor is 0.8, the interest rate must be equal to Note: Express your answers in strictly numerical terms. For example, if the answer is 5%, enter 0.05 as an answer." QUESTION 18 10 points Save Answer If the 5-year discount factor is 0.8, the interest rate must be equal to Note: Express your answers in strictly numerical terms. For example, if the answer is 5%, enter 0.05 as an answer." QUESTION 19 10 points Save Answer "What is the present value (PV) of $22000 received 4 years from now, assuming the interest rate is 7.5% per year? Note: Express your answers in strictly numerical terms. For example, if the answer is $500, write enter 500 as an