please I need these questions

ABC Company is adding a new product line that will require an investment of $1,500,000. The product line is estimated to generate cash inflows of $300,000 the first year, $250,000 the second year, and $250,000 each year thereafter for ten more years. What is the payback period? 6.75 years none of the answers given are correct 6 years 5.25 years An annuity is best described as which of the following statements? A stream of equal cash installments made at equal time intervals Another term used for future value Another term used for present value O A stream of interest payments on a principal amount invested .. 1 pts