A school has 90 children. During the day each child attends 4 classes. Each class has 15 children and 1 teacher. During the day each teacher teaches 3 classes. What is the smallest number of teachers the school can have.

A cylinder has a volume of 198 cm3, and its base has an area of 22 cm2. What is the height of the cylinder?

A business estimates that employees use 15% of possible workdays for vacation or illness. An employee is scheduled to work 240 days in one year.

A matinee ticket costs $6 per adult and $1 per child. On a certain day, the total number of adults (a) and children (c) who saw a movie was 35, and the total money collected was $70.

How do you do solve one step inequalities

Twenty students attended professor Rodriguez's class on Monday and 25 students attended on Tuesday. The number of students who attended on Tuesday was what percent of the number of students who attended on Monday.

Ted says that 3 tenths multiplied by 100 equals 300 thousandths. is he correct? use place value chart to explain your answer.

Sally's basic cable plan costs $55 a month and an additional $3 for each premium channel. Cable plan B costs $60 and an additional $2.50 for each premium channel. Which plan is cheaper if Sally wants to order 10 premium channels?

What is the difference of the polynomials? (5x3 + 4x2) - (6x2 - 2x - 9) A. - x3 + 6x2 + 9 B. - x3 + 2x2 - 9 C. 5x3 - 2x2 - 2x - 9 D. 5x3 - 2x2 + 2x + 9

5t^2-5.5-3.5t+1.5t^2+4t

Add the expressions. (8x + 2) + (-9x + 3)