Answer:So that's the change in Y. Now notice that X is increasing. By one unit each time. So we can calculate the slope. The slope is the change in Y divided by the change in X
Step-by-step explanation:
Table a is 3 b is 2 and c is 1
Answer:
.
Step-by-step explanation:
We have been given that 4 days I have 140 copies of a book, 9 days I only have 50 left. We are asked to write an equation
, where c is number of copies still on hand and t days being available.
We have two points on line (4,140) and (9,50). Now, we will use these points to find slope as:
![m=\frac{140-50}{4-9}](https://tex.z-dn.net/?f=m%3D%5Cfrac%7B140-50%7D%7B4-9%7D)
![m=\frac{90}{-5}](https://tex.z-dn.net/?f=m%3D%5Cfrac%7B90%7D%7B-5%7D)
![m=-18](https://tex.z-dn.net/?f=m%3D-18)
Now, we will use point-slope form of equation
and substitute
and coordinates of point (9,50) as:
![y-50=-18(x-9)](https://tex.z-dn.net/?f=y-50%3D-18%28x-9%29)
![y-50=-18x+162](https://tex.z-dn.net/?f=y-50%3D-18x%2B162)
![y-50+50=-18x+162+50](https://tex.z-dn.net/?f=y-50%2B50%3D-18x%2B162%2B50)
![y=-18x+212](https://tex.z-dn.net/?f=y%3D-18x%2B212)
Therefore, our required equation would be
.
3.24 + 5.70 + 6.17 = 15.11
20.00 - 15.11 = 5.11
He got 5.11$ of change back.
answer is 250 which is D Because 250 of 24%=60, so subtract 60 from 250 it will give you 190