Answer:

Explanation:
Let x represents the number of lawns that Brad must mow .
Given: The total amount of money Brad has = $80
The amount money Brad paid for every lawn = 20
Then the total money Brad has is given by :-

Also, The total amount of money Trevor has = $200
Now, the inequality can be solved for the number of lawns, x , that Brad must mow in order to have more money than Trevor is given by :-
