Answer:
![y=100-20x](https://tex.z-dn.net/?f=y%3D100-20x)
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
![m=\frac{y_2-y_1}{x_2-x_1}](https://tex.z-dn.net/?f=m%3D%5Cfrac%7By_2-y_1%7D%7Bx_2-x_1%7D)
where
is the slope
are the coordinates of the first point
are the coordinates of the second point
Replacing values:
![m=\frac{80-100}{1-0}](https://tex.z-dn.net/?f=m%3D%5Cfrac%7B80-100%7D%7B1-0%7D)
![m=-20](https://tex.z-dn.net/?f=m%3D-20)
Now, to complete our model we are using the point slope formula
![y-y_1=m(x-x_1)](https://tex.z-dn.net/?f=y-y_1%3Dm%28x-x_1%29)
where
is the slope
are the coordinates of the first point
Replacing values:
![y-100=-20(x-0)](https://tex.z-dn.net/?f=y-100%3D-20%28x-0%29)
![y-100=-20x](https://tex.z-dn.net/?f=y-100%3D-20x)
![y=-20x+100](https://tex.z-dn.net/?f=y%3D-20x%2B100)
![y=100-20x](https://tex.z-dn.net/?f=y%3D100-20x)
We can conclude that the correct linear depreciation model is ![y=100-20x](https://tex.z-dn.net/?f=y%3D100-20x)
Answer:
-5 5/6 is your answer. So, A. Hope this helps!!!
Let us say that the number is x.
So the first step that Julio do is to cube the number so
that:
x^3
Then the next he did was take cube root of the number, so
that:
(x^3)^(1/3)
Solving this would result in:
x^(3/3) = x^1 = x
Since he ends up with 20, therefore:
x = 20
<span>Julio started and ended with the same number which is 20.</span>
Answer:
yes more points
Step-by-step explanation:
tysm
Answer:
3
Step-by-step explanation:
because its is like subtacting