What is the future value of this cash flow stream at the beginning of year 7? $100 at the end of 1 year, $150 after at the end of year 2,200 at the beginning of year 3, $300 at the end of year 3, and 500 at the beginning of year 5 assuming the appropriate interest rate is 15%?

Do calculations by hand (do not use excel/financial calculator) and explain by drawing line