Please need help I will be MARKING as BRIANILIST. thank you so much.

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.

In order to be invited to tutoring or extension activities a students performance 20 point higher or lower than average for the

Which of the functions below could have created this graph?