Jill is nervous about her biology test and says to her roommate, "this is stupid! i'm stupid! i'm going to fail." when jill gets her test back a week later, she learns that she did, in fact, fail the test. jill engaged in
a) mindreadingb) a self-fulfilling prophecyc) an attributiond) using a prototypee) using a stereotype

The answer is congress

If 1/5 of the students are in the football team and the class has 40 students, you need to multiple this numbers to know the exact number of students that form the team.40 x 1/5 = 8 studentsif 4 more students join: 8+4= 12 studentsto know the %: 40 students are equivalent to the whole class (100%). then 12 students are how much %? 40 students  = 100%12 students  =    x  %x= 30% of students are in the team.