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?

12x + 1 = 25 solve the following equation. then place the correct number in the box provided.

Noor brought 21 sheets of stickers. she gave 1/3 of a sheet to each of the 45 students at recess. she wants to give teachers 1 1/2 sheets each.

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655