The school janitor is going to purchase a vacuum cleaner to use in the classrooms. the regular price of a vacuum cleaner is $70. the janitor can buy a used one for $28. how much money will he save if he buys the used vacuum cleaner?  

Explain how you do each step what term makes it inconsistent y=2x - 4 ?

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.

Secant ac and bd intersect at point e inside f what is the measure of aed if measurements cd equals 30 a b is 50 and cb is 170