I think the answer is a but I’m not for sure
Well the thing is you didn't tell us which number but if it is 12 then i strongly believe that the answer is 3/9
For this case what we should do is take into account the following conversion:

We then have the following number:

Applying the given conversion we have:

By doing the corresponding calculation we have that the standard form is given by:
Answer:
4540 million in standard form is:
Answer:
i believe the 3rd one is it but yet im not for sure
Step-by-step explanation:
Answer:
Step-by-step explanation:
y= -1/4x