60% of the class is making a C or higher. If 21 students are making a C or higher, how many students are in class?

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3

Non-euclidean geometry was discovered when, in seeking cleaner alternatives to the fifth postulate, it was found that the negation could also be true a. true b. false

Which graph represents the linear function below? y-4= (4/3)(x-2)