Answer:
B) $3 per gallon
Step-by-step explanation:
You can see on the graph that for 1 gallon of gasoline, it is $3.
Hope this helped!
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The answer to 6 is repeating I believe
as you already know, the area of a rectangle is just length*width, so is just the product of those two.

The coordinates of all the vertices:
A = (-7,5)
B = (-5,8)
C = (-2,4)