Answer is a.
Due to BIDMAS/BODMAS
anything that is first, in this case division, goes into brackets.
6 divided by 3 would go into brackets making you solve that first then u would subtract your answer by 12 making your answer 4
Answer is a.
a.
It's a cube so x should also equal 6
317.832
318
The exact answer is being written as a decimal. The rounded is answer will be 318. I hope this answers your question.