Part A.
The budget for the party is: $200.
Since they spend $75 in the food, the money that they have left in their budget is:
Answer for part A: $125
Part B.
The list of the decorations they bought is:
5 large pumpkins for $5.50 each, which is a total of:
$27.5 on pumpkins.
A package of fake gravestones for $10.75
10 Halloween luminaries for $2.50, which is a total of:
$25 on halloween luminaries.
4 packages of cotton spiderwebs for $3.99 each, which is a total of:
$15.96 on spiderwebs.
7 hanging plastic spiders for $5.99 each, which is a total of:
$41.93 on plastic spiders
How much did they spend on the decorations? We add all of the costs to get the total of money they spend:
Answer for Part B: $121.14 on decorations
Part C.
After the food, they had $125 left, so after the decorations they have left:
Thus, they don't have enough money for the $12.99 ghost decoration