a. ?Determine the equal annual net cash flows from operating the bulldozer. E and T Excavation Company Equal Annual Net Cash Flow Cash inflows: X $ $ Cash outflows: $ X $ $ b. ?Determine the net present value of the investment, assuming that the desired rate of return is 6%. Use the present value of an annuity of $1 table above. Round to the nearest dollar. If required, use the minus sign to indicate a negative net present value. Present value of annual net cash flows $ Less amount to be invested $ Net present value $ c. ?Should E & T invest in the bulldozer, based on this analysis? d. ?Determine the number of operating hours such that the present value of cash flows equals the amount to be invested. Round interim calculations and final answer to the nearest whole number. hours