You have to add 23 and 45 will get 68 then divide 68 by 4 and that is your answer
Answer:
(x^2)-4
Step-by-step explanation:
expand using the distributive property of multiplication

Since we already have like denominators, just add the numerators and keep the denominator.

Simplify:
Answer:
Lemme explain it down below
Step-by-step explanation:
150/3 would be 50 per hour.
15/3 would be 5 per hour.
120/2 would be 60 per hour