You need to set up a linear graph. One side with gallons and the other with dollars. Point 1 will be at (1500, 2.10). Point 2 (1300, 2.95). Draw a straight line through these points in your graph and your graph will then give you the answers to your other questions.
C because the x's repeat with the 3 and 3. If the x's repeat it is not a function.
Hope that helps.
Answer:

Hence, they are equivalent.
Answer:
2.44% (rounded to nearest hundredth) games LOST
97.56% Games WON
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