What percent of classes have at least 21 students first block

225/100 of last years cost. write each fraction as a decimal and as a percent

Adam drew two same size rectangles and divided them into the same number of equal parts. he shaded 1/3 of one rectangle and 1/4 of the other rectangle. what is the least number of parts into which both rectangles could be divided into?

Meee i honestly dont know what this question talking about