What degree of rotation about the origin will cause the triangle below to map onto itslef

Given right triangle xyz, which correctly describes the locations of the sides in relation to

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent and the median amount spent? 40 25 8 36 18 15 24 27 43 9 12 19 22 34 31 20 26 19 17 28