Answer:
R(x) = (20,000 - 400x)(15+x)
Step-by-step explanation:
Given,
The original price of each ticket = $ 15,
Original number of people or attendance = 20,000
Let the price of each ticket is increased by x times of $ 1,
That is, new price of each ticket = ( 15 + x ) dollars,
∵ for each $1 increase in the ticket price, attendance decreases by 400 people,
So, the new number of people = 20,000 - 400x
Since,
Revenue = number of people × price of each ticket
⇒ R(x) = (20,000 - 400x)(15+x)
Which is the required function.
