Step-by-step explanation:
Check the image above dear.....
Answer: no
Step-by-step explanation: explained in photo
Answer:
C
Step-by-step explanation:
We know it's direct variation using the direct variation equation.

Where k is the constant.
Since 7 times x is the y values, 
Now we can substitute 7 into k of the direct variation equation.

Answer:
I think Leslie Is 20
Step-by-step explanation:
You would distribute, 300 times 80 is 2400 and -3x times 1x is -3x so the equation would be y=2400-3x