Help with the Steps please

27. What is the present value of the following cash flow stream, discounted at an interest rate of 12.0%? Years: 0 CFs: so $1,500 $3,000 $4,500 $6,000 a $ 9,699 b. $10,210 c. $10,747 d. $11,284 e. $11,849 28. At an interest rate of 6.5%, what is the future value of the following cash flow stream? Years: w CFs: $75 $225 $300 a. $526.01 b. $553.69 c. $582.83 d $613 51