1779.96
1956 times .09 equals 176.04, subtract 176.04 fro 1956 and you get 1779.96.
The average temperature would be -2°Celsius
You just add up all the numbers, and the average of the numbers is the sum of all the numbers divided by the amount of numbers.
1+-6+14+-9+-15+8+-7=-14
-14/7=-2
Answer: 11
= 10.67707825
rounded to nearest whole number would be 11
-10m-18 is the awnser for this one