Algebra
The formula to find the coordinate is (x,y)
Meaning, point D is (1,4)
Answer:
To do this, you imagine a vertical (up and down) line moving across your graph from left to right. It should only be touching the line at one point at a time. If it is touching more than one point on the line at a time, the line is not a valid function. The first line and its inverse both pass the test.
Step-by-step explanation:
14 x 20.5 = 287
That's for one room.
287 x 4 = 1148
For all rooms.
He will need 6 rolls.
If he had 5, it would be less than the required amount.