Answer:
the = 180
Step-by-step explanation:
The domain is R so the first one is correct.
Answer:
y = 18 + 0.50x
Step-by-step explanation:
I think that is the answer.
Consider the function
First, factor it:

The x-intercepts are at points 
1. From the attached graph you can see that
- function is positive for

- function is negative for

2. Since
the function is neither even nor odd.
3. The domain is
the range is