The state of Montana is experiencing a warm day after a heavy snowfall. The graph shows the height of snow, h, in centimeters after t hours. 1.) What linear function does the graph represent.

h= 3t = 6
h=3t+18
h=−3t+18
h=−3t+6
The initial value represents which of the following?

The amount of snow melting each hour.

The amount of snow remaining after four hours.

The amount of snow that accumulated the previous night.