To provide an accurate response, I need to refer to the specific details of the graph mentioned, which I cannot see. However, if the graph represents Amanda's earnings as a function of hours worked, you would typically look for the point representing 8 hours on the x-axis and see what corresponding value it has on the y-axis to determine her earnings.
If the y-axis reflects a linear increase, you can extrapolate from the values given for less than 8 hours to estimate her earnings for 8 hours.
Please provide more information or details from the graph, and I can assist you more effectively!