Keller Construction is considering two new investments. Project E calls for the purchase of earthmoving equipment. Project H represents an investment in a hydraulic lift. Keller wishes to use a net present value profile in comparing the projects. The investment and cash flow patterns are as follows: Use Appendix B for an approximate answer but calculate your final answer using the formula and financial calculator methods. a. Determine the net present value of the projects based on a zero percent discount rate. b. Determine the net present value of the projects based on a discount rate of 9 percent. (Do not round intermediate calculations and round your answers to 2 decimal places.) c. If the proiects are not mutuallv exclusive. which proiect(s) would vou accept if the discount rate is 9 percent