X= 115x95 this is because when you solve it will give you your answer
4cm•2=8cm which is the length of the red paper so therefore Red paper= 4cmx8cm.
Then your going to take 3cm-4cm= 1cm
Next your going to solve for 7cm-8cm=1cm
Which leaves you with an answer of 1cmx1cm more of visible red paper.
Answer:

Step-by-step explanation:
Let the x-axis be the time (in years) and the y-axis the value of the fax machine (in dollars).
We know that the initial value of the fax machine is $100; in other words, when the time is zero years, the value is $100, or as an ordered pair (0, 100). We also know that after 1 year the value decreases to $80, so (1, 80).
Now we can find the slope of the line passing through those two points using the slope formula

where
is the slope
are the coordinates of the first point
are the coordinates of the second point
Replacing values:


Now, to complete our model we are using the point slope formula

where
is the slope
are the coordinates of the first point
Replacing values:




We can conclude that the correct linear depreciation model is 
Hopes this helps:
Answer:
12 1/3