The cafeteria ordered 400 paper plates. they usef 226 at breakfast. they bought 100 more. Then, they used some plates for lunch. Now there are 78 plates. How many plates did they use at lunch?

The mean average of the following 4 Math grades will become your report card mark. 97, 78, 84 and 86. What will your report card be

If sin (theta°) = 0.5, and we know that cos (theta°) < 0, then what is the smallest possible positive value of theta?

Find the mean, median, mode, and range of the data set. 23, 31, 26, 27, 25, 28, 23, 23, 25, 29, 29, 29, 25, 22, 30, 23

Jordan takes 50% of the cherries from a bowl. Then Mei takes 50% of the remaining cherries. Finally Greg takes 50% of the remaining cherries. There are 3 cherries left. How many cherries were in the Bowl before Jordan arrived?

How to do double sided equations

If one gallon of gas costs $3.50 how much would 3,5, and 7 gallons cost?

to mail a cardboard box, you measure its size and mass. It is 55cm long, 25cm wide and 20 cm high. The mass of the box is 4kg. What is the density of the boxes in grams over cm squared

Select the action you would use to solve x/4 = 16. Then select the property that justifies that action

A company estimates its total profit (profit = total revenue minus total cost) as P (x) = 2x5 - 3x4 - 5x2 - 2, where P is in thousands of dollars and x is the number of years elapsed since the company was founded.

On a number line, the surface of a river is marked at - 225 feet and the top of a building is marked at + 18 feet, where 0 represents sea level.