Three different ways to write improper fraction for 3 1/2

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

Factor the polynomial by its greatest common monomial factor.

Aparking garage charges $1.12 for the first hour and 0.50 for each additional hour. what is the maximum length of time tom can park in the garage if we wishes to play no more than $5.62