Mary spent a total of $354.29 for a party. She spent $200.49 on food, plus an additional $30.76 for each hour of the party. How long was the party?

A.
4 hours
B.
7 hours
C.
5 hours
D.
6 hours

To find out how long the party was, we need to first subtract the cost of food from the total cost:

$354.29 - $200.49 = $153.80

Now, divide the remaining cost ($153.80) by the cost per hour ($30.76):
$153.80 / $30.76 ≈ 5

Therefore, the party was 5 hours long.

Answer: C. 5 hours