What is 21/72 simplified to?

Student price tickets to a movie are $1 and non student tickets are $2. 350 tickets are sold and the total amount made is $450. how many non student tickets were sold ? a) 100 b) 150 c) 200 d)250

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?