PLEASE ANSWERRRRRRRRRRRR

Answer:
3
Step-by-step explanation:
We need to find the slope. This is the rate of change for a line
Pick two points (0,1) (1,4)
m = (y2-y1)/(x2-x1)
=(4-1)/(1-0)
=3/1
The rate of change is 3 dollars per guest