Question

The graph of y=f(x)y=f(x) is shown below. Find all values of xx for which f(x)>0f(x)>0

Answer 1

(-∞, -7) ∪ (-3, ∞)

Explanation:

The line y=0 is the x-axis. The graph is above the x-axis for x < -7 and for x > -3. The solution set is ...

(-∞, -7) ∪ (-3, ∞)