I think its B but ima have to check again and get back to you
ANSWER

EXPLANATION
The given function is a piecewise defined function.

is the y-value that corresponds to

To determine that y-value, we need to trace from

to where it meets the graph.
We then trace to the y-axis to determine the corresponding y-value as shown in the diagram.
From the graph, we can see that this x-value corresponds to a y-value of

This implies that, when

Therefore

See graph.
The average rate of change is m=5.
Hope this helped.
Answer:
$21/$1.50 per mile =14 miles. The units match $/($/mile), so division was the proper operation.
C
Step-by-step explanation:
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