Hi!
The mouse and the keyboard are <em>input devices. </em>By using them, we can input data which will give us a (hopefully) desired output!
For example...
Just by using my keyboard to type, I'm inputting data in the form of ASCII characters and symbols.
By using my mouse to click on an area so I can move this sentence on a new line, I had to input a request to do such!
Hopefully, this helps! =)
Answer: A. Help her distinguish between main topics and subtopics.
Explanation: APEX
Answer:

Explanation:
In order to obtain the decimal number we have to use the next formula:

(The position to the right of the decimal point we will take it as negative)
Using the formula we have:


Answer:
Explanation:
The following code is written in Python and is a function that loops three times asking for the last name and first name. Then it uses this information to create a username. Finally, each of the names and usernames is printed on the screen.
def userName():
for x in range(3):
last_name = input("What is your last name: ")
first_name = input("What is your first name: ")
username = first_name[:3] + "#" + last_name[-3:]
print(last_name + ", " + first_name)
print(username)