To predict the number of inches of snow after 10 hours using the trend line equation \( y = 1.7x + 0.1 \), we can substitute \( x = 10 \) into the equation:
\[ y = 1.7(10) + 0.1 \]
Calculating this gives:
\[ y = 17 + 0.1 = 17.1 \]
So, after 10 hours, the snowfall would be 17.1 inches.