A standard showerhead in Andrew's house dispenses 8 gallons of water per minute. Andrew changed this showerhead to an energy-saving one. The equation shows the amount of water dispensed, y, as a function of the number of minutes, x, for the new showerhead.
y = 3x
How much water does Andrew save each day with the change in showerheads if he uses the shower for 8 minutes each day?
5 gallons
16 gallons
24 gallons
40 gallons