Mr. Jones asked his first and second period classes to record the number of phone numbers that they had saved in their cell phone, as
shown on the dot plots below.
First Period
Second Period
22
15 16 17 18 19 20 21 22
Number of Phone Numbers
15 16 17 18 19 20 21
Number of Phone Numbers
What is the difference between the median number of phone numbers between the two periods?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Even if a person is in very good shape, applying to be a police officer requires commitment to fitness. applicants must pass a physical fitness test. in order to prepare for the test, janet purchases an activity tracker to court her steps. her goal is to walk 10,000 steps each day. she measures heard average step length to be 30 inches. play janet runs, her average steps length increases to 36 in. how many steps would she have to take to run 1 mile 50280 round to the nearest step

What is the domain of the step function f(x)=[2x]-1?