You have to choose a cell phone plan that is least expensive in a month. plan a is a flat rate $50 per month, unlimited data. plan b is $0 per month, but you pay $5 per gigabyte of data used. if you average about 6 gigabytes of data used per month, which option will be least expensive?

Find the domain of the following expression: 1/(√x)-2

Meghan has created a diagram of her city with her house, school, store, and gym identified. a. how far is it from the gym to the store? b. meghan also wants to walk to get some exercise, rather than going to the gym. she decides to walk along arc ab. how far will she walk? round to 3 decimal places.

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.