25 POINTS I WILL GIVE BRAINLIEST!! The graph represents the money collected at the movie theater on Saturday. Find the domain when the maximum number of people allowed in the movie theater is 60 people.

ALSO PLEASE GIVE AN EXPLANATION

This is worth 13 points not 25?:-(

To find the time it takes for a body to travel a certain distance given its rate, divide the distance with the rate. By letting t be the time, the expression would be,

                                                     t = d / r

From the given, 
                                             t = 315 km / (35 km/h) = 9 h

Thus, it takes 9 hours for a body to travel 315 km given that its speed is 35 km/h.