Mackenzie has been babysitting her neighbor's son daily for 2 hours each 1 day. She earns $2.75 an hour. How much money will she make for 28 days of babysitting?

What are “like terms”? why can we only add like terms?

Rena is building a 1: 180 scale model of a real castle. her model has a rectangular base that is 3 feet wide and 4 feet long what is the area of the base of the actual castle in square feet

There are 93 calories in a small candy bar how many calories are ther in a half dozen small candy bars?