3. Growth Fertilizer Company purchases a gravity settling tank by borrowing the $30,000 purchase price. The loan is to be repaid with four equal annual payments at an interest rate of 12%/yr/yr. It is anticipated that the tank will be used for 9 years and then sold for $2000. Annual operating and maintenance expenses are estimated to be $9000lyr. A savings of $15,000 per year is realized over the present filtration system. The firm uses a MARR of 15%yr/yr for its economic analyses. Determine whether the firm should invest in the tank using each of the following measures of worth a. Future Worth b. Annual Worth c. IRR