Lily owns a restaurant. She changes the menu. She records the number of customers using the restaurant for 15 days after the menu is changed. Her results are shown in the stem-and-leaf diagram.

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

Atemperature of 1.64◦f corresponds to answer in units of ◦c.

Sawsan recorded the favorite sport of students at her school. she surveyed 200 students. how many students chose tennis?