Answer:
One of the below.
Step-by-step explanation:
12-2=10 2+x=12
The answer is in the red part but the work is everything on top.
Answer:

Step-by-step explanation:

* The above answer is written in reverse, which is the exact same result.
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Answer:
The constant value (often written k) relating amounts that rise or fall uniformly together. It is the ratio of the amounts y and x: k = y/x. Put another way: y = kx.
Answer:
Step-by-step explanation:
D.All of the above