The inverse is where the x and y values are flipped, so the left side would have 6 7 8 9 and the right side would have 9 10 11 12 for the inverse.
Therefore your answer is A.
Answer B
There are 16 oz in a pound. 16(2)=32 and there are 4 oz leftover.
Answer:

Step-by-step explanation:

Distribute.

Add 5x and subtract 15 on both sides.


Multiply -1 on both sides.
