(Ignore income taxes in this problem.) Crockin Corporation is considering a machine that will save $9,000 a year in cash operating costs each year for the next six years. At the end of six years it would have no salvage value. If this machine costs $41,607 now, the machine's internal rate of return is closest to: Click here to view Exhibit 8B-1 and Exhibit 8B-2 to determine the appropriate discount factor(s) using tables. 6% 8% 7% 9%