Answer:
how is this meant to be a complete question? :D
For this case we have the following fusions:

We must find 
By definition:

The domain of the function will be given by all the values for which the function is defined, that is, all real numbers except zero.
Answer:
(-∞, 0) U (0,∞)
Let the age be x.
Given,





Hence, x = -2 or 25.
Since, the age of the teacher cannot be in negative, the age of the teacher is
25 years.
answer
X = -1.5w + 0.5s
Step-by-step explanation:
s = 3w + 2x
s-2x = 3w
- 2x = 3w - s
X = -1.5w + 0.5s