4 A firm has invested $30000 in equipment with a 5-year useful life. The machinery will have no salvage value. The annual benefits from the machinery are $7200 for the first year and increase by $1000 per year. Assume a combined 30% incremental (federal and state) income tax rate, straight-line depreciation, and MARR of 9%/year. (a) (10 points) Compute the before-tax present worth PW(9%). A) 2640 B) 3510 C) 4340 D) 5120 (b) (10 pts) Compute the after-tax present worth. A) 1040 B) 1290 C) 1580 D) 1830 () (10 points) Compute the after-tax present worth, if 20% bonus depreciation is used. A) 1040 B) 1290 C) 1580 D) 18305. ABC rental car company purchased 10 new cars for a total cost of $250,090, The cars generated income of $195,000 per year and incurred annual operating cost of $100,000, ABC uses MACRS depreciation and its combined incremental (federal and state) tax rate is 30%. The 10 cars were sold at the end of the third year for a total of $80,000. Assume MARR is 9% year. (a) (10 pts) Compute the before-tax present worth. A) 36800 B) 44230 C) 52220 D) 59130 (b) (10 pts) Compute the taxable income for year 3. $55000 B) $98000 C) $127000 D) $151000 (c) (10 pts) Compute the after-tax present worth PW(9%). A) $13700 B) $18200 C) $23340 D) $32780