Finding the domain and range of a function using a graph

Finding the domain and range of a function using a graph

Create a graph of a function and find its domain and range. State a real life situation that could be represented  by  this graph

An example of what I am expecting

A local youth group is planning a trip to a local amusement park. They 

are taking their church bus which holds 32 people. It will cost $25 for 

parking and tickets to enter the park are $22.50 per person. The equation 

that models this situation is: c(n) = 22.5n + 25, where c represents the 

cost for the group to go the park and n represents the number of people 

who go on this excursion. 

Create a graph of a function and find its domain and range

D{0≤n≤32}

R{25≤c(n)≤745}

And create a graph to represent this