Final answer:
The average low temperature for the week is approximately -1.14.
Step-by-step explanation:
The average low temperature for the week can be calculated by summing up the temperatures for each day and then dividing the sum by the number of days. In this case, we have temperatures of -7, -3, 4, 1, -2, -8, and 7. Adding them up, we get -7 + (-3) + 4 + 1 + (-2) + (-8) + 7 = -8. Finally, dividing -8 by 7 (the number of days in the week), we find that the average low temperature for the week is approximately -1.14.