Your answer should be A because the domain is what is going to be at the bottom of the graph and the range is whats on the side of the graph. This picture also is a function, so your answer should be A.
I hope this helped!
please mark this as brainliest.
Answer: 
Step-by-step explanation:
We will <em>collect like terms</em>, then we will add each variable up through addition and subtraction (simplify).
<u>Step 1</u><u>: Collect like terms.</u>

<u>Step 2</u><u>: Simplify the expression.</u>

~I hope I helped you :)~
Alicia had - $11.00 in her checking account. She did a few chores and made $44.50. She decided to pay for her and a friend to go to the movies and each ticket costs $6.25. How much money does she have left in her account?
There are 30 students in Mrs.
Woodward’s class and 15 of the class has their own cell phone. Of this group of students, 12 of them
are allowed to use social media. How many of the students have a cell phone and can use social media?
There are two up there
3x+y=19
y=19-3x and y=x+3, at a solution both x and y are equal so we can say y=y:
19-3x=x+3
19-4x=3
-4x=-16
x=4, and since y=x+3
y=7 so the solution is the point:
(4,7)