Solve the triangle 📐

Here are the solutions for questions 1 and 3.

Question 1:
Given the functions $f(x) = x^2$, $g(x) = \frac{1}{x-4}$, and $h(x) = kx+m$.

a) Explain the meaning of the statement "$x \neq 4$" in the function $g(x)$.
The statement $x \neq 4$ means that $x$ can be any real number except 4. If $x$ were equal to 4, the denominator of $g(x)$ would become zero, making the function undefined.

b) Find $g(0)$.

Step 1: Substitute $x=0$ into the function