Answer:
(1.222, -2.444)
Step-by-step explanation:
I hope you can understand the question now
A, e, d are the answers :) hope I helped
Answer:
Step-by-step explanation:
Answer:
![y=1.25x+3.5](https://tex.z-dn.net/?f=y%3D1.25x%2B3.5)
Step-by-step explanation:
Let
represent number of tickets and
represent the total cost to purchase them.
Now,assuming the relation to be of the form:
, where,
and
are constants.
Let us find
and
using the values from the table.
For,
. So,
![12.25=7a+b\\or\ 7a+b=12.25------------1](https://tex.z-dn.net/?f=12.25%3D7a%2Bb%5C%5Cor%5C%207a%2Bb%3D12.25------------1)
For,
. So,
![16=10a+b\\or\ 10a+b=16------------2](https://tex.z-dn.net/?f=16%3D10a%2Bb%5C%5Cor%5C%2010a%2Bb%3D16------------2)
Subtract equation 1 from equation 2. This gives,
![10a+b-7a-b=16-12.25\\(10a-7a)+(b-b)=3.75\\3a=3.75\\a=\frac{3.75}{3}=1.25](https://tex.z-dn.net/?f=10a%2Bb-7a-b%3D16-12.25%5C%5C%2810a-7a%29%2B%28b-b%29%3D3.75%5C%5C3a%3D3.75%5C%5Ca%3D%5Cfrac%7B3.75%7D%7B3%7D%3D1.25)
Now, plug in
in equation 1 and solve for ![b](https://tex.z-dn.net/?f=b)
![7(1.25)+b=12.25\\8.75+b=12.25\\b=12.25-8.75=3.5](https://tex.z-dn.net/?f=7%281.25%29%2Bb%3D12.25%5C%5C8.75%2Bb%3D12.25%5C%5Cb%3D12.25-8.75%3D3.5)
Therefore, the relation between the number of tickets and total cost of purchase is given as:
![y=ax+b\\y=1.25x+3.5](https://tex.z-dn.net/?f=y%3Dax%2Bb%5C%5Cy%3D1.25x%2B3.5)
The equation would be written like this 2x-10=48. First add 10 to both sides so 2x-10+10=48+10 so simplified that is 2x=58. Now, divide both sides by 2 to get x by itself so it will look like this 2x/2=58/2 simplified that is x=29. I hope this helped you.