It cost $20 for a concert ticket plus an additional $5 processing fee. Let t represent the number of tickets sold and C represent the cost. Write a function rule.

Please help

well t tickets cost 20t

now add the constant fee

C=20t+5

To write a function rule in this case, we need to define the relationship between the number of tickets sold (t) and the cost (C), taking into account the base cost of $20 and the additional processing fee of $5 per ticket.

The cost of one ticket is $20, and for each ticket, there is an additional $5 processing fee. Therefore, the total cost (C) can be represented as:

C = t(processing fee) + base cost.

The processing fee for t tickets is 5t (since there is a $5 fee per ticket), and the base cost is $20. So the function rule can be written as:

C(t) = 5t + 20.

In this equation, C(t) represents the cost (C) as a function of the number of tickets sold (t).