The average price of movie tickets in the US from 1980 to 2000 can be modeled by the function f(x) = 0.10x + 2.75 where x is the number of years since 1980. Graph the function and identify the domain + range. Find the year where the price of a movie ticket was $4.55.

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.