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.
See the attached files
<h2>Explanation:</h2>
Here we have the following inequality:

In order to graph the shaded region, we have to graph the equation of the line
whose slope is
and y-intercept
. So the graph of the line is shown in the First Figure below.
To find the shaded region we need to have a look at the symbol > that indicates that the shaded region is above the graph of the line and. Since this doesn't include the symbol =, then the line is dotted. Therefore, the resulting region is shown in the second Figure.
<h2>Learn more:</h2>
Shaded regions: brainly.com/question/9611462
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Each Had 10. Y= 4. Because 3 x 4 = 12 + 8 = 20 ÷ 2 = 10