Henry and Samantha have $30 to spend on bags of feed at the petting zoo. Each bag cost $3. Given that H and S represent the number of bags that Henry (H) and Samantha (S) bought, which expression can be used to represent the amount of money they had leftover?
The amount of money Henry and Samantha spent on bags of feed is given by the expression $3(H + S)$. The amount of money they had leftover can be found by subtracting this amount from the total money they started with, $30. Thus, the expression for the amount of money they had leftover is $30 - 3(H + S)$.
