A piece of equipment costs $30,000, and is expected to generate $8,100 of annual cash revenues and $1,400 of annual cash expenses. The disposal value at the end of the estimated 10-year life is $3,000. Ignoring income taxes, the payback period is: Multiple Choice 3.70 years. 4.03 years. 4.48 years. 7.50 years. None of these options is correct. San Marco has a $4,010,000 asset investment and is subject to a 40% income tax rate. Cash inflows related to the investment are expected to average $610,000 before tax over the next few years; in contrast, average income before tax is anticipated to be $503,000. The company's after-tax accounting rate of return is: Multiple Choice 7.53% 9.13%. 12.54%. 15.21% None of the answers is correct