Answer:
n = 18
Step-by-step explanation:

Cross multiply and simplify

Divide both sides of the equation by 5

Simplify : Cross cancel common factor: 5

The answer to your question is x=3y-4
Answer:
Survey Data Collection.
Step-by-step explanation:
This is a survey because there are survey questionnaires (wellness exam).
6loads cover 2/5 so you have to take 6÷2/5 and you get 15loads of gravel