For a biology assignment, Karen records the height of a plant over time. The plant was 12 cm tall when she started the assignment. She notices that the
plant grows 6 cm every week.
36
Time
Which point is on her graph?

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.