To determine how much more Suzi can spend, we first add up her current expenses:
- Lunch: $8
- Movie tickets: $12
Total spent so far: \[ 8 + 12 = 20 \]
Now, we subtract this from her total budget for the outing, which is $28: \[ 28 - 20 = 8 \]
So, Suzi can spend an additional $8 on this outing without going over her budget.
The correct response is: $8.