There are initially 5.00 inches of snow on the ground. It begins snowing, and snow falls at a steady rate of 4.00 inches per hour.
?
?
A: Explain why the depth 
, in inches, of snow on the ground is a linear function of the number of hours 
since the snowfall began.
?
B: Find a formula that gives the depth of snow on the ground after 
hours of snowfall.
?
C: Solve the equation you found in part 
for 
and explain in practical terms what this equation tells you.
What will be an ideal response?
?
B: 
?
C: 
or 
. This equation tells you how long it takes for the snow to reach a given depth.
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