Answer:
The answer is B on Edge
Step-by-step explanation: $5,136; approximately 24 months
So I assume you need a table as your work,
y= 3x
i will try to do a table
x || 1 || 2 || 3 || 4 ||
y || 3 || 6 || 9 || 12 ||
If the x value is repeated is is not a function. (unless it is a negative and a positive)
So lets see:
For A we have 3 6 9 12 no repeations so therefore It is A
For B we have 2 2 3 9, 2 is repeated so therefore it is B
For C we have 4 6 4 6, both 4 and 6 were repeated so therefore is is B
and lastly for D we have 3 5 6 6
And 6 was repeated so therefore it is B.
A)A
B)B
C)B
D)B