A test is worth 100 points. The test is made up of 40 items. Each item is worth either 2 points or 3 points. Which matrix equation and solution represent the situation?
Answer
A
the 2 by 3 matrix row 1, 1 1 40 row 2, 2 3 100 There are 20 items worth 2 points each and 20 items worth 3 points each.
B
the 2 by 3 matrix row 1, 1 1 40 row 2, 2 3 100 There are 10 items worth 2 points each and 30 items worth 3 points each.
C
the 2 by 3 matrix row 1, 1 2 40 row 2, 1 3 100 There are 10 items worth 2 points each and 30 items worth 3 points each.
D
the 2 by 3 matrix row 1, 1 2 40 row 2, 1 3 100 There are 20 items worth 2 points each and 20 items worth 3 points each.