Alexis works 7.5 hours a day as a waitress in a restaurant. She earns $12.75 an hour plus any additional money received from tips. How much money does she make in one month if she worked 18 full days and earned $92.55 in tips?

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.