1. The table shows the average low temperature at Anchorage, Alaska, from December 17 to December 24. At the bottom of the table is the average temperature for the 8-day period.

17-dec

18 - dec - 8

19 - dec 1

20 - dec 10

21 - dec - 1

22 - dec 7

23 - dec 4

24 - dec 6

average=1.25

What was the low temperature on December 17?

This problem is about statistics. From December 17 to December 24, there are a total of 8 temperatures as data. However, one is missing, so you only have 7. Since the average is known, we start from there:

By adding all the known data, the total is 37. Taking into account the unknown, the sum is (37 + x). Thus,

(37 + x) / 8 = 1.25

This results to x = - 27. The low temperature on December 17 was - 27.