A. Investigate the weather forecast in your city. Record the high and low temperatures that are forecast for the next 7 days in the table
below. In the columns titled, Difference," record the change in temperature from the day
before. To do this, subtract the previous temperature from the current temperature Be
sure to use positive and negative numbers as needed! For example, if yesterday's
temperature was 70 and today's temperature was 65, the difference is 65-70 =-5.
Low
Date
High
Temperatu
Subtract
previous
temperatu
re from
current
temperatu
Difference Temperatu
Difference
Subtract
previous
temperatu
re from
current
temperatu
re
-NA-
re
-NA-
-NA-
-NA-
1
2
3
4
5
6
17
Note: The columns for Day One's subtraction and difference cannot be filled in. As this is
the first data point, there is no previous temperature to subtract.
B. Write a mathematical expression using the information from your table to answer
the following questions:
1. What is the mean change in the forecasted high temperatures over the next 7 days?
Remember, this can be found by averaging the values in the Difference column for the
high temperatures. Show your work and steps. If your answer is not an integer, explain
what two integers your answer is between.