Shrek Casting Company is considering adding a new line to its product mix. The production line would be set up in unused space in Shrek's main plant. The machinery$$s invoice price would be approximately $210,000$; another$15,000$ in shipping charges would be required; and it would cost an additional $30,000$ to install the equipment. The machinery has an economic life of $4$ years, and would be a class $8$ with a $20$