anonymous
  • anonymous
Need an explanation @iambatman @jamesr
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
I need help figuring out how to solve something like this.
anonymous
  • anonymous
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?
anonymous
  • anonymous
I just need someone to explain how to do it.

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anonymous
  • anonymous
@iambatman
mathstudent55
  • mathstudent55
The standard showerhead uses 7 gallons per minute. In 8 minutes, it uses \(7~ \dfrac{gallons}{minute} \times 8~minutes = 56~gallons\) The energy-saving showerhead uses water according to the equation y = 3x, where y = number of gallons, and x = minutes. For 8 minutes, we let x = 8 y = 3(8) y = 24 The daily savings of water is 56 gallons - 24 gallons What is 56 - 24 = ? Since y = number of gallons, this means that the energy-saving showerhead uses 24 gallons of water in 8 minutes.

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