I’m pretty sure it is linear sorry if it’s wrong have a good day
#2 is a right triangle
#3 is an acute triangle
#4 is an obtuse triangle
#5 it would become 2 obtuse triangles but u need to make the line.
_Please make me brainliest_
The expression is: 
The value of expression when x=5 is 3
Further explanation:
We have to translate the given sentence to form an expression.
Given
"The sum of a number x and 4"
This will be equal to:

"all divided by 3"

We will put x=5,

The expression is: 
The value of expression when x=5 is 3
Keywords: Expressions, Algebra
Learn more about algebraic expressions at:
#LearnwithBrainly
15% of 80$ is equal to $12