Alpha petroleum industry has $600,000 to invest. The company is considering three different projects that will yield the following rates of return: Project x 24% Project Y 18% Project 2 iz 30% The initial investment required for each project is $100,000, $300,000, and $200,000, respectively. If MARR is 15% per year and the company invests in all three projects, what overall rate of return will the company make? Second:[3] A new municipal refuse-collection truck can be purchased for $84,000. Its expected useful life is six years, at which time its market value will be zero. Annual receipts less expenses will be approximately $18,000 per year over the six-year study period. Use the PW method and a MARR of 18% to determine whether this is a good investment Third: [2] Find the numerical value of the factor (A/F,1%,45) using interpolation