Suzi has a total budget of $28 for the outing. She spent $8 on lunch and $12 on movie tickets.
First, let's calculate the total amount Suzi has spent so far:
\[ 8 \text{ (lunch)} + 12 \text{ (movie tickets)} = 20 \text{ dollars} \]
Now, we subtract this amount from her total budget to find out how much more she can spend:
\[ 28 \text{ (total budget)} - 20 \text{ (amount spent)} = 8 \]
So, Suzi can still spend $8 on this outing without having a negative balance.
The correct response is: $8.