Which of the following functions is graphed below

Step-by-step explanation:

The given graph represents a piecewise function. The graph is discontinuous at x=2.

Open circle represents that the point x=2 is not included in the function and closed circle represents that the point x=2 is included in the function.

For x≤2, it a the graph of a cubic function which is generated by shifting the graph of to three units down.

for x≤2

For x>2, it a the graph of a quadratic function which is generated by shifting the graph of to 6 units up.

for x>2

Therefore, the graph represents the function

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b.) 160 miles on a 5 gallons car

step-by-step explanation:

240/10=24 miles/gallon

160/5=32 miles/gallon

30/1=30 miles/gallon

168/6= 28 miles/gallon

32 miles/gallon is the most amount, so this is the best.