4-91. An electronic device is available that will reduce this years labor costs by $8,000. The equipment is expected to last for 10 years. Labor costs increase at a rate of 5% per year and the interest rate is 10% per year.(4.12)

a. What is the maximum amount that we could justify spending for the device? Draw a cash flow diagram to represent the situation.

b. What is the uniform annual equivalent value (A) of the labor costs over the eight-year period?

A very similar question was answered in the Chegg Textbook Solutions for Engineering Economy (16th edition) Chapter 4 Question 4-91, but I need a cash flow diagram to help visualize the situation.