Question

How do you solve this equation?

Answer 1

Thenswer is p is greater than or equal to 4. which, you already wrote. 

steps:
1. subtract 140 from both sides. now you have: 15p (is greater than or equal to) 60.

2. divide both sides by 15. 

3. simplify. now, the answer is p (is greater than or equal to) 4.

Answer 2

The inequation is:
140+15x≥200

15x≥200-140
15x≥60
x≥60/15
x≥4   

Therefore: she has to sell at least 4 paintings