45 children attend a preschool. the number of 2 year olds is one half the number of 3 year olds. the number of 4 year olds is the same as the number of 3 year olds.

a. how many 2 year olds attend preschool
b. how many 3 year olds attend preschool
c. how many 4 year olds attend preschool

The art class is planning to paint a mural on an outside wall. this figure is a scale drawing of the wall. width: 11 in length: 28 in unit rate: 1.5 ft per in. write the ratio of the area of the drawing to the area of the actual mural. write your answer as a unit rate. show that this unit rate is equal to the square of the unit rate 1.5 ft per in