Answer:
20 Students
Step-by-step explanation:
If there is 1 chaperone for every 4 students, and there are a total of 5 chaperones on the trip, you can use this information to know that..
If there are 5 chaperones and 4 students for each chaperone, that would give you 20 students!
2:12 is an equivalent ratio
Replace x with a couple of numbers, solve for Y them mark those points on the graph and connect with a line.
See picture:
The answer to A is the pic below