Solve by building an equation model and using the problem-solving guidelines as needed. Ch...

Solve by building an equation model and using the problem-solving guidelines as needed. Check all answers using a graphing calculator. General Modeling Exercises

U.S. postal regulations require that a package can have a maximum combined length and girth (distance around) of 108 in. A shipping carton is constructed so that it has a width of 14 in., a height of 12 in.,

and can be cut or folded to various lengths. What is the maximum length that can be used?

Source:www.USPS.com