Estimate the area between the x-axis and the graph of f(x) = 9 - x² over the interval [-2, 1] by using the three rectangles shown here: 10- 2 s 7 6 $ 4

The question has different steps. Please indicate each step's answer and draw a circle around the answer. If you write by hand, write clearly so that I can understand. Please answer the question, I appreciate you. Please respect yourself and circle the answer. I posted the question several times. I am curious whether you understand or not.