Answer:
9/4
Step-by-step explanation:
1.
2.
3. 
Therefore, the slope is 9/4.
I think not because a square has four sides and a triangle has three.
Answer:
7 sheets of paper
Step-by-step explanation:
$40-$19=$21
$21/$3=7 sheets of paper.
In words:
I did 40 minus 19 to get 21, and the divided 21 by 3 to get 7 sheets of paper.
Answer:
8x + 2y.
Step-by-step explanation:
8 . x . 2 . y = 16xy = 16yx