Can someone explain to me of how to do this?

1) 11

2) 15

Step-by-step explanation:

The bars on the sides of the numbers represent the absolute value/magnitude of the number, so you will need to remove the negative symbol if it is present in front of the number (if it is already a positive number, leave it as it is).

Example:

Hope this helps :)

Domain: (-∞,∞)

Range: (-∞,18)

Step-by-step explanation:

Did the assignment myself