Mrs. Grayson wrote an expression on the board. She told her students that x = 3 and y = -2. What is the value of the expression Mrs. Grayson wrote on the board?

The principal at Stone Oak Elementary School would like to get a representative sample of the student body to ask them for their opinions about the school cafeteria. Which of the following is the best way to find a representative sample of all the students in the school?

Richard hung up a screen in his backyard to project a movie onto. The screen is 10 feet long and 5 feet wide. What is the area of Richard's screen?

Michelle learned some facts about triangles, quadrilaterals, pentagons, and hexagons today in math class. She made the chart above to organize her notes. How many diagonals from a single vertex are in a 10-sided figure?

Jan entered a drawing to win a new bicycle 5 times. Only 150 entries were received. What is the probability that Jan will win the bicycle?

At 11:00 AM, a 1-meter-high mailbox casts a 0.2-meter shadow onto the ground. If the pole next to the mailbox casts a 4-meter shadow, how tall is the pole?

There was a power failure in Jenny's neighborhood last week. The power went off on Monday at 11:00 AM and came back on Tuesday at 6:00 AM. For how many hours was the power off?

Freddy wrote out the expression P = 2L + 2W at the top of his math exam to remember a certain formula. Which of the following is another way to write the same expression?

If Lisa is drawing a circle with the opening of her compass set at 3 inches, how can she find the diameter of her circle?

Eddy's mom bought 3 lbs of tomatoes and some cucumbers yesterday. After Eddy's family ate 3 lbs of cucumbers and 1 lb of tomatoes, they had the same number of pounds of cucumbers and tomatoes left. How many pounds of cucumbers did Eddy's mom buy yesterday?