It’s winter and the powder on vail mountain has never been better. you decide to measure the snowfall over a three hour period to determine the amount of snow that has fallen. the first hour you record a 5% increase in snowfall, the second hour you record a 8% increase in snowfall, and the third hour you record a 11% increase in snow fall. over the three hour period, the snow has increased to a height of 17 inches. how high was the snow on the first hour just before it started to snow? round your answers to the nearest tenth of an inch.