Look at the graph.
Where x = 12, find what y is.
For example, where x = 10, y is 15.
Now find what y is when x = 15.
You should now have 2 points: (12,y1), and (15,y2).
Now use the slope formula (y2-y1)/(x2-x1) to find the average rate of change. (x1 is 12, and x2 is 15)
B. If the circle was shaded in 3 would be included
Step-by-step explanation:
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Uh we don’t know how to help with this answer we need more context sorry :(
Answer:25x=320=12.8
Step-by-step explanation:
a number=x
x*25=25x
25x=320
320/25=12.8
x=12.8