Sasha’s hundredths decimal model shows the product 0.72. If she shaded 9 columns, what factor represents the shaded rows? (Easy question for easy points.)

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct