please show how to figure these out

Assume an inderest rate of S\%. If rou ingat $500 in one year, 5000in two now? Question 5 1pts Assume you are offered an investment that pays $700 a vear from now and an additional $900 a vear after that, If the interest rate is 4% what is the mort you would be willing to pay for that investment today? Question 6 1 pts If the interest rate is 5% what is the annuity present value factoc for a three year annuity? 23.1525 3.1525 1.8160 272325