8.
(04.02 MC)
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? (1 point)
5 gallons
16 gallons
24 gallons
40 gallons
To find out how much water Andrew saves each day, we need to compare the amount of water dispensed by the old showerhead to the amount of water dispensed by the new energy-saving showerhead.
The old showerhead dispenses 8 gallons of water per minute, so if Andrew uses the shower for 8 minutes each day, it would dispense 8 * 8 = 64 gallons of water each day.
The new showerhead dispenses 3 gallons of water per minute, so if Andrew uses the shower for 8 minutes each day, it would dispense 3 * 8 = 24 gallons of water each day.
Therefore, Andrew saves 64 - 24 = 40 gallons of water each day.
Answer: 40 gallons.