The domain of a function is the set of all numbers that has an image in the co domain. It means that those elements are mapped to other elements and give output values.
From the figure we see that all the elements in are marked to other elements in . So, the domain would be:
Assuming you go to school for a week (7 days), you will go to school 7 * 4 = 28 hours in a week. There are about 4 weeks in a month, so you would do 28 * 4 = <u>112 hours</u>. Your answer is 112 hours.
