Self$-$Study Problem $3\mathrm{.}4$

Byron is a certified public accountant who is self$-$employed. He is required to make a $5-$day business trip to Salt Lake City for an audit. Since he is going to be in Utah, Byron decides to stay for the weekend and go skiing. His expenses for the trip are as follows:

$\backslash$table$[[$Airfare to Salt Lake City and return,$$480$