A
B
C
D
Explanation
Correct answer: B.
Choice B is correct. If customers register for new accounts every day, then customers registered for new accounts in the first days. Therefore, of the first new accounts that were registered, , or , were registered in the first days.
Desmos solution:
Enter in Desmos:
Reviewed and rewritten by CookSAT
Why the other choices are wrong
Choice A
Choice A is incorrect. The fraction represents the fraction of accounts registered in of the first days.
Choice C
Choice C is incorrect and may result from conceptual or computation errors.
Choice D
Choice D is incorrect. The fraction represents the fraction of the first accounts that were registered in day.