In a survey, 25% of the students said that math was their favorite class. If 20 students said that math was their favorite, how many students were surveyed in all?

Which value would be a solution for x in the inequality 47-4x< 7

To convert celsius temperatures to fahrenheit, you can use the expression (c + 32). tom says that another way to write this expression is c + 32. what error did tom make?

How can you check that you have correctly converted frequencies to relative frequencies?