Answer:
y = (25+x)(4000-100x)
Step-by-step explanation:
Given,
The original price of each ticket = $ 25,
Let x be the times of $ 1 increment,
So, the new price of each ticket = $ (25+x),
Also, the original number of seats = 4000,
∵ For each $1 increase in ticket price, 100 fewer tickets will be sold,
Thus, the new number of tickets = 4000 - 100x
Since, revenue = price of each tickets × the number of tickets,
Hence, the total amount of money collected,
y = (25+x)(4000-100x)
Which is the required function.