What is the value of cap A in the matrix equation? cap A plus the 2 by 4 matrix, row 1, column 1, 3 column 2, 9 column 3, negative 1 column 4, negative 8 row 2, column 1, 16 column 2, negative 2 column 3, 3 column 4, 13 is equal to the 2 by 4 matrix, row 1, column 1, 0 column 2, negative 5 column 3, 6 column 4, 10 row 2, column 1, 3 column 2, 0 column 3, negative 2 column 4, 7