Question

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

Answer 1

Answer: 40 gallons

Explanation:

Answer 2

The equation for the amount of water dispensed, y, as a function of the number of minutes, x, for the old showerhead is: y = 8x

The difference between the amount of water dispensed by the old showerhead and the new showerhead is y = 8x - 3x = 5x

Therefore, the amount of water saved each day if he uses the shower 8minutes each day is 5(8) = 40 gallons.