Question

Brainy reward help me pls

Answer 1

-2/3 gallons/min

Step-by-step explanation:

let x = time in minutes

let y = volume of water in gallons

when x = 0, y = 7

when x = 3, y = 5

`\mathsf{rate \ of \ change \ = (change \ in \ y)/(change \ in \ x)=(7-5)/(0-3)=-\frac23 \ gallons/min}`

Answer 2

`\sf (2)/(3) \ is \ the \ change \ per \ minute \ in \ the \ amount \ of \ water.`

Step-by-step explanation:

`\sf unit \ rate : (y_1-y)/(x_1-x)`

`\sf unit \ rate : (7-5)/(3-0)`

`\sf unit \ rate : (2)/(3)`