
Home Water Works says that in most homes, showers are the third-largest user of water after toilets and clothes washers. The average American shower water usage is 17.2 gallons with the average shower length being 8.2 minutes. The average flow rate is 2.1 gallons per minute.

The answer is 144%
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2.2367 , therefore to the nearest hundredth it would be 2.237
Answer:
m=-2
entire equation in slop int. form is: 7=-2x+5