Required Equation is 
Given: A line passing through
and 
Slope =
= 
Equation of line is:

Where b is y intercept
for value of b

⇒ b = -1
and Equation of line is:

For another parallel line that passes through the point (-3,0)


c = 2
then the equation is:

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The one is a vertical translation of the parent function to the left of one

making it -1.
Answer:
37.5 Gallons will be used after a 15-minute shower.
50 Gallons will be used after a 20-minute shower.
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Answer:it’s c on edge, sorry i’m late but for anyone else who needs help it’s c !!
Step-by-step explanation: