In 2009, 80 deer were reintroduced to a wildlife refuge. In 2015, the population grew to 180 deer. IF the population grows exponentially, find a formula for the function

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.