Answer:
c.
Step-by-step explanation:
Starting with the multiplications, first the multiply matrix A by -4, so we multiply every value in the matrix by -4 and we get
16 16 -4
-4 -16 -28
-8 -12 -12
Then we do the next multiplication which is 8 by matrix B, so once again we multiply every value in the B matrix by 8
16 72 -72
64 64 -16
32 80 8
Now that we did both multiplications, just need to sum the results, so we sum each value of matrix A with the value on the matrix B that's on the same spot
16 + 16 16 + 72 -4 + (-72)
-4 + 64 -16 + 64 -28 + (-16)
-8 + 32 -12 + 80 -12 + 8
And the final result is
32 88 -76
60 48 -44
24 68 -4
So it's option c
