There are four adult champerones for every 15 students who attend a school field trip. if there were135 students, how many adults would there be on the field trip.

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

What is the greatest number of parts of a circle that can be formed by cutting the circle with 7 straight cuts? (note: the parts do not have to be equal in size)