Final answer:
Elizabeth would have 12 inches of snow on her lawn 4 hours after the snow began to fall.
Step-by-step explanation:
To determine how much snow Elizabeth would have on her lawn 4 hours after the snow began to fall, we can use the formula:
Total snow = Initial snow + (Rate of snowfall * Time)
In this case, the initial snow is 8 inches, the rate of snowfall is 1 inch per hour, and the time is 4 hours. Plugging in these values, we get:
Total snow = 8 + (1 * 4) = 8 + 4 = 12 inches
Therefore, Elizabeth would have 12 inches of snow on her lawn 4 hours after the snow began to fall.