To find the average temperature for the week, we start by adding the temperatures for each day together and then dividing by the number of days.
The temperatures for each day are:
- Monday (M): -9°F
- Tuesday (T): 5°F
- Wednesday (W): -7°F
- Thursday (TH): -5°F
- Friday (F): 6°F
Now, let's add them together:
\[ -9 + 5 + (-7) + (-5) + 6 \]
Calculating step-by-step:
-9 + 5 = -4
-4 + (-7) = -11
-11 + (-5) = -16
-16 + 6 = -10
So, the total sum of the temperatures is -10°F.
Now, we divide by the number of days (5):
\[ \text{Average Temperature} = \frac{-10}{5} = -2°F \]
Therefore, the average temperature for the week is -2°F.