It would be 12 because it's twice it's number so it's multiplying and is less than 20.
Answer: This is a nonfunction because there are two different x values for the y value of 20 . In order for it to be functional every x value has to have a different y value.
Step-by-step explanation:
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C.
It is not a because the part with the slope is less than one, and it is not b because the closed point is on the part that is just 4.