Answer:
8m+3
Explanation:
Let m be the number of lemon used in a pitcher of lemonade.
Serena sold 8 pitchers of lemonade, therefore she used 8m lemons.
Since there is a leftover of 3 lemons, we add:8m+3
Therefore:
Total number of lemons Serena has can be determined by the expression: 8m+3
where m is the number of lemons used in one pitcher of lemonade.