After 6 students joined a class, the class had 28 students. Which equation can be used to find n, the number of students in the class before the 6 new students joined? * A n + 6 = 28
B n - 6 = 28
C 6n=28
D n/6=28

Atest consists of 10 multiple choice questions, each with 5 possible answers, one of which is correct. to pass the test a student must get 60% or better on the test. if a student randomly guesses, what is the probability that the student will pass the test?