E21-24 (similar to) question city hospital city hospital, a taxpaying entity, estimates that it can save $ 30 comma 000$30,000 a year in cash operating costs for the next 1010 years if it buys a special-purpose eye-testing machine at a cost of $ 135 comma 000$135,000. no terminal disposal value is expected. city hospital's city hospitals required rate of return is 1212%. assume all cash flows occur at year-end except for initial investment amounts. city hospitalcity hospital uses straight-line depreciation. the income tax rate is 34 %34% for all transactions that affect income taxes