Answer:

Step-by-step explanation:
Given
Let x represent the number of tickets, and p the charges

A reduction of 50c gives an increment of 50 tickets.
This gives:
---- 

Required
Determine the demand function
First, calculate the slope:




So, the equation is:




Hence, the function is:

The answer is (4v+2)*(2v-16)
Answer: Anything you buy is never just money you have to pay tax so you 1$ is tax