7. a. Find the present values of the following cash flow streams at a 9% discount rate. Do not round Intermediate calculations. Round your answers to the nearest cent. 0 1 2 3 4 5 8. . 9. $0 $150 Stream A Stream B $400 -0. SO $400 $400 $400 $400 $250 $150 $250 $400 Stream A: $ 1391.5 Stream : $ b. What are the PVs of the streams at a 0% discount rate? Round your answers to the nearest dollar. Stream A: $ 1650.0 Stream : $