The graph below shows the weekly salaries of two employees based on the number of items sold. Use graph to answer Part A and Part B. Salaries A graph has items sold on the x-axis and weekly salary on the y-axis. A line for Dreya goes through points (0, 500) and (4, 600). A line for Marsha goes through points (0, 250) and (3, 400). Part A: What is the initial value of Dreya. (1pt) Part B: Explain the meaning of the initial value. (2pts)