What is the average rate of change of f(x) over the interval {-1,2}?

Find measure angle 1 and measure angle 3 in the kite the diagram is not drawn on the scale

Jo divides a candy bar into eight equal pieces for her children to share she gives three pieces to sam three pieces to leslie and two pieces to margie rose the two month old baby does it doesn't get any what fraction shows how muchw candy each of the four children got. what's the answer to my question

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great