To find out how much more Suzi can spend on arts and crafts supplies, we need to first calculate how much she has already spent and then subtract that from her total budget.
Suzi's total budget: $40
Amount spent on specialty paper: $12
Amount spent on felt: $8
Total spent:
\(12 + 8 = 20\)
Remaining amount Suzi can spend:
\(40 - 20 = 20\)
So, Suzi can spend $20 more this month without having a negative balance.
The correct answer is $20.