Answer: The expression is undefined for x=4 and x=5.
The expression is undefined for any x that makes the denominator 0. This leads to solving a quadratic equation:

Per month means multiply
Total means the amount your ending with but for this you could say add
Final answer f = 4.75 + 10m
144 - 12g^2.
Because we don't know the value of g, there's nothing else we can do.
1/6 (divide each by 2)
4/24 (multiply each by 2)
It allows students to see the importance of their own learning process. Process Recognition: Students can identify what they did well, what they failed at, what they need to change.