Can someone with any of these that you

A.is a linear function because That makes this a linear function—a function is linear if its graph forms a straight line. The line is straight because the variables change at a constant rate. That is another characteristic of linear functions—they have a constant rate of change.
 
B. 25x+5

C.0 is the meaning of the cell phone the first number in the x value

D.100 is the number that the phone would cost

E.5x=10 2*5=10

F..0 is the meaning of the cell phone the first number in the x value

1.3because 6*30=180