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Mathematics, 11.12.2019 23:31 j215495
Atub of water is emptied at a rate of 3 gallons per minute. the equation y β12 = β3(x β 1) models the amount of water remaining, where x is time (in minutes) and y is the amount of water left (in gallons). analyze the work shown below to determine the initial amount of water.
1. solve for the y-variable.
y β 12 = β3(x β 1)
y β 12 = β3x + 3
y = β3x +15
2. write the equation using function notation.
f(x) = β3x +15
the tub started with
gallons of water.
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