You can identify the slope which is done by calculating it between two points of the line using the formula which everyone know is y2--y1 and x2--x1
Or you can find the Y intercept which you substitute the slope and the coordinates you have of a point.
:)
C= 20-0.75x
c= 20-0.75(9)
c= 20-6.75
c= 13.25
Here c is the amount of change and x is the number of books bought.
The customer's change will be $13.25
Sorry man I don't know if im write but try 28.78
Answer: The answer is A, $78.00
Step-by-step explanation: Hope it helps
Answer:
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Step-by-step explanation:
<h2>Nice</h2>