Answer:
100
Step-by-step explanation:

This can be turned into:
(if we add the numbers inside the brackets)
Following PEDMAS, this becomes:
which equals 
∴
Answer: The answer for f= 3.1
Answer:
5/8 =)
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
Any other product in Quadrant IV will be negative also, so Quadrant IV is part of my answer. The points (x, y), with xy < 0, lie in Quadrants II and IV.
When brackets are used in a expression its most likely there and there's parenthesis inside of the brackets. Hope this helps. :|