5. Chelsea is mixing her favorite hue of purple paint. Her mixture requires 5 ounces of red and 8 ounces of
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we have
using a graph tool
see the attached figure
For t=0 d=4 -------> the y-intercept
that means that at the time t=0 the house was four units away.
For t=60 min d=0 -------> x-intercept
that means he was already at home at the time t=60 minutes.
therefore
the graph of this equation represents the walk towards the house
