Select all that apply: 21 days is equal a. 504 hours b. 30,240 minutes c. 1081404 seconds d. 3 weeks e. 1 month

1 week is 7 days.

3 weeks = 21 days. Answer D. is correct.

A hour is 3600 seconds

24 hours ( a day ) is 86400 seconds

21 days is 1814400 seconds.    * This is not an option *

Since 24 hours are in a day 24 hours x 21 days is 504 hours

Answer A. is correct

504 hours x 60 minutes per hour is 30240

Answer B. is correct. These are all the correct answers, A,B, and D.

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step-by-step explanation:

f is the midpoint of