Net Present Value Method-Annuity Briggs Excavation Company is planning an investment of $307,200 for a bulldozer. The bulldozer is expected to operate for 1,000 hours per year for seven years. Customers will be charged $150 per hour for bulldozer work. The bulldozer operator costs $30 per hour in wages and benefits. The bulldozer is expected to require annual maintenance costing $10,000. The bulldozer uses fuel that is expected to cost $39 per hour of bulldozer operation Present Value of an Annuity of $1 at Compound Interest 20% 0.833 1.528 2.106 2.589 2.991 3.326 3.605 3.837 12% 0.943 0.909 0.893 1.833 1.736 1.690 15% 0.870 1.626 2.673 2.487 2.402 2.283 3.170 3.037 2.855 3.353 3.785 5.582 4.868 .564 4.160 6.210 5.335 4.968 4.487 Year 690 10% 3.465 4.212 4.917 3.791 3.605 4.355 4.111 6.802 5.759 5.328 4.772 4.03 1 10 7.360 6.145 5.650 5.019 4.192 a. Determine the equal annual net cash flows from operating the bulldozer. Use a minus sign to indicate cash outflows