Mike uses 120 pints of water to take a 5 minute shower. Dad uses 100 quarts for a 10 minute shower. Maria uses 24.8 gallons for an 8 minute shower. Who uses the most gallons of water per minute? Explain.

Then Maria uses 3,1 gallons /min is the user with most gallons of water per minute

Step-by-step explanation:

Mike uses 120 pints of water for a 5 minutes shower

1 gallon is equal to 8 pints therefore Mike uses 120/8 gallons for a 5 minutes shower

W(mi) =  120 / 8  gallons

W(mi) =  15 gallons for a 5 minutes shower

Dad uses 100 quarts, as  a gallon is equal to 4 quarts

W(d) =  100 / 4  

W(d) = 25 gallons for a 10 minutes shower

And  Maria

W(ma) = 24,8 gallons for an 8 minutes shower

Then:

Mike uses  15 gallons / 5 min

Mike uses 3 gallons / min

Dad uses 25 gallons / 10 minutes

Dad uses 2,5 gallons / min

Maria uses 24,8 gallons / 8 min

Maria uses 3,1 gallons /min

Then Maria uses 3,1 gallons /min is the user with most gallons of water per minute

idk

step-by-step explanation:

idk

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -