6. Over a period of 5 hours, the outside temperature changed by an average of -2.5 per hour. Which statement correctly describes the change in the temperature from the beginning to the
end of the 5-hour period?

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