Answer:
You only have to sort (numbers with numbers and variables with variables) then do the operations (+/-).
Step-by-step explanation:

Answer:
A is the answer
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Answer:
StartFraction 2 A Over b EndFraction = h
Step-by-step explanation:

(Points plotted and connected in picture below)
Slope: 9
The slope represents the total cost depending on the number of DVDs ordered.
Y-intercept: 6