The graph shows the number of paintballs a machine launches, y, in x seconds:
Which expression can be used to calculate the rate per second at which the machine launches the balls? (5 points)
A80/40
B20/4
C4/80
D4/20
The graph shows the number of paintballs a machine launches, y, in x seconds:
Which expression can be used to calculate the rate per second at which the machine launches the balls? (5 points)
A80/40
B20/4
C4/80
D4/20