Use the tables to answer the question.
Average Test Scores This Semester
Biology Chemistry
Test 1 85 79
Test 2 89 77
Test 3 82 80
Test 4 78 72
Average Test Scores Last Semester
Biology Chemistry
Test 1 80 73
Test 2 84 74
Test 3 76 82
Test 4 72 69
Mrs. O’Donnell wants to compare how her students did on the science unit tests this semester with how they did last semester. Find the difference in the matrices. Which response is the difference in values in the second row, first column?
(1 point)
Responses
−5
6
−6
5