To find out how much more Suzi can spend, we first need to determine how much she has already spent.
Suzi's total budget for the month is $40. She spent $12 on specialty paper and $8 on felt:
Total spent = $12 + $8 = $20.
Now, subtract the total spent from her budget:
Amount left = Budget - Total spent = $40 - $20 = $20.
So, Suzi can spend an additional $20 on arts and crafts supplies without going over her budget.
The correct response is:
$20