Answer:

Step-by-step explanation:
hope this helps:)
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.
:)
X

38 -> 24x
x > 38 -> 31(x-38) + 912
912 = 24*38 (You will have to have 38 hours to be able to be in this part of the piece wise function)