Roger gets $\$40$ per day as wages and $\$4.50$ as commission for every pair of shoes he sells in a day. His daily earnings goal is $\$112$. **Write an equation to determine how many pairs of shoes, $p$, Roger must sell in a day to meet his daily earnings goal.** [[☃ expression 1]] **Find the number of pairs of shoes he must sell to meet his daily earnings goal.** [[☃ input-number 1]] pairs of shoes