A new machine is bought for $9, 500 with a life of seven years and a salvage value of $1700. What is the annual equivalent cost of the machine with an interest rate of 5%? Yearly maintenance costs of a CNC machine start at $4200 and increase by 7% each year. If the machine is to be used for 6 years, calculate the present worth of the maintenance costs. The interest rate is 4%. A 5-year project requires an initial investment of $10,000 and further investments of $2000 and $1500 on years 2 and 4. A payout of $6000 occurs on year 4 and one of $16,000 occurs on year 5. The interest rate is 8%. Build the cash flow diagram Calculate net present value of the project