In the function y = 0.25x + 3.5, y represents the cost of a gallon of milk after a certain number of years, x. how much does the cost of milk increase every year?
a) $0.07
b) $0.25
c) $0.60
d) $14

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.