help and explanation with a and b

4. The Jones Company has just completed the third year of a five-year MACRS recovery period for a piece of equipment it originally purchased for $298,000. Year 0 1 2 3 4 5 6 5-year MACRS 0% 20.00% 32.00% 19.20% 11.52% 11.52% 5.76% a. What is the book value of the equipment at t=3, i.e., after 3 years? b. If Jones sells the equipment today for $175,000 and its tax rate is 35%, what is the after-tax cash flow from selling it