please solve and show work. include cash flow diagrams

assignment Include the cash flow diagram(s) for each problem. You do not need to repeat the question in your work. 1) One of two machines, Gamma and Delta, is to be purchased to provide for a for a new production opera- tion in a factory. Machine Gamma costs $20,000 and machine Delta $30,000. However, machine Delta will result in an annual savings in operating costs of $1,500 over machine Gamma. Each machine has a useful life of 8 years and will be worthless at the end of 8 years. Money is valued at an effective annual interest rate of 8.0%. Which machine would you recommend purchasing and why