Which of these is a unit rate?

A 18 students in a class

B 18 students in 18 chairs

C 18 students in 6 rows

D 18 students in 2 reading groups

A gardener is planting two types of trees: Type A is 9 feet tall and grows at a rate of 3 inches per year. Type B is 4 feet tall and grows at a rate of 7 inches per year.

Find 3.96/0.7 to the nearest tenth

Which of the following is the most accurate definition of a function

Lena is cutting a price of plywood to serve as the base for a model. The base is a square whose perimeter is 48 centimeters. Lena knows that the formula for the perimeter of a square is 4S.

The sum of one-half a number and 7 is twice the number minus 5. What is that number?

Trignometric ratios

Simplify | 4-9 | A) 13 B) 5 C) - 5 D) - 13

Plastic cups come in packages of twenty-four and straws come in packages of twenty. What's the smallest number of each that could be bought so that you had the same amount of cups and straws?

What is 12+2-8=6-12 = - 6 + 18

A ramp leading into a building makes a 15 degree angle with the ground. The end of the ramp is 10 feet from the base of the building. Approximately how long is the ramp? Round to the nearest tenth.