The equation
d = 5h
relates time (h) in hours and the accumulated snow (d) in centimeters.
Replacing with d = 1, and solving for h, we get:
1 = 5h
1/5 = h
0.2 = h
It takes 0.2 hours for 1 cm of snow to accumulate in the yard
Replacing with h = 1, and solving for d, we get:
d = 5(1)
d = 5
5 centimeters of snow accumulate per hour