Find the unit rate. Twelve gallons of gas cost $22.68.
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Hey there!
So, if
, this would mean that we would do 
and from this, we would get 8.
We will then need to find what is
.
= 
So, the equation would really look like . . .
![\left[\begin{array}{ccc} 8*(7)-2*4 = 48 \\ \\ x=\boxed{7}\end{array}\right]](https://tex.z-dn.net/?f=%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D%208%2A%287%29-2%2A4%20%3D%2048%20%5C%5C%20%5C%5C%20x%3D%5Cboxed%7B7%7D%5Cend%7Barray%7D%5Cright%5D%20)
Hope this helps.
~Jurgen
So, if
We will then need to find what is
So, the equation would really look like . . .
Hope this helps.
~Jurgen