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## Sagot :

y=3x.

3 is the slope here, and it means that the new shower head dispenses 3 gallons per minute.

Following, this pattern, the equation for the previous shower head is y=8x.

From this point, there are two ways to solve this:

Way 1: Input x, which in this case is 8 minutes, into each equation, and then find the difference with subtraction.

y=3x

y=3*8

y=24

So the new shower head dispenses 24 gallons in eight minutes.

y=8x

y=8*8

y=64

Therefore, you can conclude that the old shower head dispensed 64 gallons in eight minutes.

To figure out how much he saves, subtract the values:

64-24= 40 gallons.

Way 2) Find the difference before substitution:

y=8x-3x

y=5x

Substitute for x.

y=5*8

y=40 gallons

Therefore, the answer is D. 40 gallons. I hope this helped :)

[tex]40[/tex] gallons water Andrew save each day with the** change in shower heads** if he uses the shower for 8 minutes each day

**What is equation?**

In mathematics, an** equation** is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

According to questions, standard showerhead in Andrew's house dispenses 8 gallons of water per minute. Andrew changed this shower head 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 shower head.

[tex]y=3x[/tex]

Following, this pattern, the equation for the previous shower head is [tex]y=8x[/tex]

Amount of water dispensed previously

[tex]=3[/tex]×[tex]8=24[/tex]

Amount of water dispensed after change in shower

[tex]=8[/tex]×[tex]8=64[/tex]

Total water Andrew save each day with the change in shower

[tex]=64-24=40[/tex] gallons

Hence, we can conclude that [tex]40[/tex] gallons water Andrew save each day with the** change in shower heads** if he uses the shower for 8 minutes each day.

Learn more about **equation** here:

brainly.com/question/21105092?referrer=searchResults

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