In this question, Vanessa is doing 3 math quizzes and then doing 1 more which makes a total 4 test. She wants to get 49 average scores, so the total score she needs to have should be: 4*49= 196 scores.
Then the next score that Vanessa should get in her 4th score:
Total score= score1 + score2 + score3 + score2
196 = 45+ 32 +37 +score4
196= 114+ score 4
score 4= 196 -114= 82
