Answer:
x=2
Step-by-step explanation:
First, subtract four on both sides and then divide both sides by 2 to get x=2.
2x+4=8
<em>-4 -4</em>
2x=4
<em>÷ 2 ÷2 </em>
<u>x=2</u>
I attached a graph of the function for you to look at. For domain and range use what you know, domain is how far it can stretch from left to right, and the range of the function is how far it can go from bottom to top.
Without the original equation, it's impossible to answer that question. I'm sorry.