Answer:
(D)
Explanation:
You can input any value for x and the result will be a real number
You didn't specify, but a human should be awake no longer than 16 hours a day (if this is what you meant)
Yes their is, some people can be hands on learning, or they may use the style of someone telling them how to do it. Theirs also reading to learn. Some other styles as well.
Answer:
people take care of the community so nothing bad happens
Explanation: