Question

At the end of a snow storm, Tristan saw there was a lot of snow on his front lawn. The

Answer 1

Answer:$S(t)=12-0.75t$

Step-by-step explanation:

Given: The snow started melting at a rate of 0.75 inches per hour and it is known that 4 hours  after the storm ended, after the storm ended, the depth of snow was down to 9 inches.

Snow melted in 4 hours = $0.75\times4 =3\text{ inches}$

Initial depth of snow = 9 + 3 inches = 12 inches.

Now, depth of snow on Tristan's lawn = Initial depth -0.75(Number of hours)

Let S(t) be the depth of snow on Tristan's lawn, in inches, t hours after the snow stopped falling.

Then, $S(t)=12-0.75t$