A company purchases a new filtration system by borrowing the $30,000 purchase price. The loan is to be repaid with 4 equal annual payments at an annual compound rate of 12%. It is anticipated that the system will be used for 9 years and then be sold for $2,000. Annual operating and maintenance expenses are estimated to be $9,000/year. A savings of $15,000/year is realized over the present system. The firm uses a MARR of 15% for its economic analyses.

Determine PW, AW and FW.