Answer:
$52.5
Explanation:
Step one:
given data
we are given that the linear function for the cost is c=3.5t
c is the cost and
t is the number of tickets.
We are told that t=15, to find c, let us put the value of t in the linear function for the cost
![c=3.5(15)\\\\c=52.5](https://img.qammunity.org/2021/formulas/mathematics/high-school/mmov0m66x6n9izk936rmytzmqj2y6ujdyy.png)
This shows that 15 tickets will cost $52.5