Please explain

The financial managers of a firm determine the MARR. Why does an engineer need to know this number? They want to know how much of a profit the company is going to make so they can decide if they want to invest in the company's stock. They want to understand the impact of tax law changes on corporations. They need to know they company's goals for bottom line profitability. They need to understand the company's required rate of return for capital dollars they are going to invest in capital projects