No. No. It is not linear because the slope has to be able to be plugged in to any x, y coordinates and be placed on the line.
6 adults were in the group and 4 children
19-15 = C Number of students over the course of a year!
19-15 gives us a total of 4 students over the course of the year!
So the value of C is 4 students
The initial value is how much he starts out with, and it says he has $32
So the initial value is B, $32
20+35+30= 1 hr&25 min so she should leave at 5:20