To find the afternoon temperature, we start with the morning temperature, which is -10°F. The temperature increase in the afternoon is 17°F.
To calculate the afternoon temperature, we add the temperature increase to the morning temperature:
\[ \text{Afternoon Temperature} = \text{Morning Temperature} + \text{Temperature Increase} \] \[ \text{Afternoon Temperature} = -10°F + 17°F \] \[ \text{Afternoon Temperature} = 7°F \]
So, the afternoon temperature was 7°F.