Hello I'm in AP calculus AB . I'm trying to understand these questions and how to solve them. If you could help me how to solve them and interpret them step by step I would gladly appreciate it. Thank you for all that you do.

In Exercises 7-8, use the graph of f shown below consists of line segments and a semicircle, as shown in the figure. *Use geometric formulas. (4. 2) (-4, -1) 7. Find the net signed area between the function and the x-axis over the interval [-4, 6]. 8. Find the total area between the function and the x-axis over the interval [-4, 6]