C is the answer to the question
Answer:

Step-by-step explanation:
We want to simplify:

We rewrite to get:

We now apply the laws of indices

We simplify to get 
We leave our final answer is scientific form.
The final answer is therefore:

answer: a 13 units. its 13 units bc 13+3=16 soooooooooooo yeahhhhhhhh
Actually , the picture is not complete, will you please upload it again
Answer:
its A
Step-by-step explanation: