If cap r is equal to the 2 by 2 matrix, row 1, column 1, 3 column 2, 7 row 2, column 1, negative 2 column 2, negative 11 , what is 4 cap r ?

To find 4R, multiply every entry of R by 4. This gives 4(3) = 12, 4(7) = 28, 4(−2) = −8, and 4(−11) = −44. The resulting matrix is [12 28; −8 −44], which is choice D.

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