Answer:
12 windows
Explanation:
This isn't too long. Bear with me though- this explanation will be REALLY long.
1. Find the difference between 50 and 15. This is the money that Jonathan must earn from washing windows.
Answer 1: $35
2. $3 earned for each window washed is represented by 3w
That money could be more than enough than $35.
Answer 2:

3. Solve that inequality.
Answer 3:
