Answer:
3) The commercial costs $900 to produce and $110 each times it is aired.
Explanation:
We can determine how expensive it is to produce a commercial by looking at the function C(n)'s output when n = 0 (when the commercial hasn't been aired yet).
C(0) = 110(0) + 900
C(0) = $900
So, the cost of producing a commercial is $900.
We can see that $110 is added to the cost each time n is incremented by 1. Therefore, it costs $110 each time the commercial is aired.
We can put these two statements together to deduce that answer option 3 is correct:
The commercial costs $900 to produce and $110 each times it is aired.