At the end of a snow storm, Tristan saw there was a lot of snow on his front lawn. The
temperature increased and the snow began to melt at a steady rate. After the storm,
the snow started melting at a rate of 0.75 inches per hour and it is known that 4 hours
after the storm ended, the depth of snow was down to 9 inches. Write an equation for
S, in terms of t, representing the depth of snow on Tristan's lawn, in inches, t hours
after the snow stopped falling.
Let S represent the depth of snow on Tristan's lawn, in inches, t hours after the snow stopped falling.
Given that the snow started melting at a rate of 0.75 inches per hour, we can write the equation:
S = 9 - 0.75t