## Algebra 1: Common Core (15th Edition)

Kate has 3 more pairs of shoes than Sam. If Sam has $b$ pairs of shoes, how many pairs of shoes does Kate have?
The question asks to come up with a real life situation that involves the model $b+3.$ In this situation, $b$ represents the number of pairs of shoes that Sam has, and $3$ represents how many more pairs of shoes Kate has. For example, if a question was asked regarding how many pairs of shoes Kate has, we could use the model to figure out the answer. If Sam has 5 pairs of shoes, representing $b$, Kate has 3 more pairs than Sam does. Using the model $b+3$, we plug in $5$, the number of pairs of shoes Sam has, and add $3$ to find out the number of pairs of shoes Kate has. $5+3=8$ (number of pairs of shoes Kate has)