Unsure of what you want.
If you are merely to mult. the 3x3 matrix by -8, then mult. every one of the 9 elements in the first matrix by -8. That's it.
If there was more to this problem, please share the instructions.
Answer:
29
Step-by-step explanation:
350 divided by 12 and you will get an answer of 29.16666667 and when you round off to whole number you will be getting 29 since there is a number less than 5 next to the decimal point .