Answer:
$1,665
Explanation:
Side note: The question is quite unclear. In my opinion, the correct question should be - The cost of a school banquet is $75 + 30n, where n is the number of people attending. What is the cost for 53 people?
We know that the value of "n" is the number of people attending at the school banquet. Therefore, if we want to determine the cost of 53 people, we must substitute n = 53.
⇒ $75 + $30n
⇒ $75 + $30(53) [Substituting n = 53]
⇒ $75 + $1590 [Simplifying]
⇒ $1665 [Simplifying]
Therefore, the total cost of 53 people attending the school banquet is $1665.