There’s an app called Photomath download its free it’s simple it gives u the answer and shows how to work it out
The standard form of thr number is 11.651
8*4-4/2+1
32-4/2+1
32-2+1
=31 answer
So, the answer to this question is 31
The answer a are
1 C
2 A
3 whatever letter has the the answer 5x10^10
