Answer:
the first one :)
Step-by-step explanation
If the number of negatives is an even number it would make it positive and if it is an odd number it would make it negative.
Answer:
[1 , +∞)
Step-by-step explanation:

Answer:
e = 14x, where x is the number of hours he works, and e is the total earnings.
Answer:
(4, 2.5)
Step-by-step explanation:
2.5 = 2 