Answer:
C.
Step-by-step explanation:
Take the first element in the first row in A and B and substitute in -7A - 6B:
- 7A - 6B = -7(-10) - 6(5)
= 70 - 30
= 40
So the answer is Choice C.
One further check to confirm C
Second number:
-7(10) - 6(6) = -106 which is the value in C.
