22-29 New equipment purchase, income taxes. Jenna's Bakery plans to purchase a new oven for its store. The oven has an estimated useful life of 4 years. The estimated pretax cash flows for the oven are as shown in the table that follows, with no anticipated change in working capital. Jenna's Bakery has an 8% after-tax required rate of return and a 34% income tax rate. Assume depreciation is calculated on a straight-line basis for tax purposes using the initial investment in the oven and its estimated terminal disposal value. Assume all cash flows occur at year-end except for initial investment amounts. 1. Calculate (a) net present value, (b) payback period, and (c) internal rate of return. 2. Calculate accrual accounting rate of return based on net initial investment