JT Engineering is considering the purchase of a machine that costs $720,000, has a 15 -year life, and no salvage value. Annual revenues of the product that will be produced with this machine are expected to be $190,000 with annual expenses of $121,000, excluding depreciation. If JT uses the straight-line method to compute depreciation, what is the annual rate of return on this purchase? 11.05% 7.36% 5.83% 2.92%