The graph shows the quadratic function f (x).

what is the average rate of change for the
quadratic function from x = 10 to x = 12?

Anyone know? will mark brainliest if correct!

Which of the following best describes the delian problem?

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.