Correct or fastest get a standard showerhead in marty's house dispenses 7 gallons of water per minute. marty 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 marty save each day with the change in showerheads if he uses the shower for 8 minutes each day? the option choices are
4, 12, 32, 53

32 gallons

Step-by-step explanation:

Given: Previous rate of dispensing water= 7 gallons per min

If Marty use 8 min showerhead then

Total amount of water dispensed=

After Marty changed the showerhead to energy saving with equation

y=3x, where y is the amount of water dispensed as a function of the number of x minutes for the new showerhead.

When we put x=8 minutes, we get total amount of water dispensed=

Water saved by Marty = 56-24 = 32 gallons

Hence, Marty save 32 gallons each day.

1/5x+9 2/5y+7

step-by-step explanation:

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).