The change in amount of gasoline is -0.55
The rate of change is the ratio of change in the y variable to that of the x variable.
From the given table, we can use the following coordinate (1, -2.15) and (2, -2.70)
Substitute the coordinate into the formula to have:
[tex]Rate \ of \ change = \frac{-2.70+2.15}{2-1}\\Rate \ of \ change = \frac{-0.55}{1}\\Rate \ of \ change =-0.55[/tex]
Hence the change in amount of gasoline is -0.55
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