The correct answers among all the other choices are A) Addition, B) Subtraction, C) Multiplication, and D) Division. These mathematical operations can be used with functions. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
Step 1
Find the area of one tile
we know that
the area of a square is

where b is the length side of the square
In this problem

Substitute

Step 2
Find the area of the floor
The area of a rectangle is equal to

where
L is the length of the rectangle
h is the width of the rectangle
In this problem


Substitute

Step 3
Find the number of tiles needed
by proportion

therefore
<u>the answer is</u>

7 plus 7 equals 14. Add one to that and you have 15 which is the answer.
The points (1,-2) and (4,16) are not in the line but the point (-3,-18) is on the line. (Work is shown in the image)
4x1/2=2. 2 is less than 4 so it shows that it is false.