Solve the following questions .An appropriate cash flow diagram for each question is MUST as a part of your answer, showing all steps. Solve in three ways; 1. Using tables answering by handwriting, 2. Then solve again using Excel functions as well as 3. Using equations Q1:The net cash flow associated with development and sale of a new product is shown. Determine the present worth at an interest rate of 12% per year. The cash flow is in $1000 units. Show ( a ) hand and (b) spreadsheet solutions. Year 1 2 3 4 5 6 7 8 9 Cash Flow, $ 1-120 -100 -40 +50 +50 +80 +80 +80 +80 1