I think it is 13 by looking at the angle and numbers.
If one game needs two* players, and there are 5 games,
you multiply two by five to get ten players total.
The answer to the question
For plan A it will only take five minutes to amount to $20.50
Plan B will need 30 min to cost the same as plan A $20.50
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: