on friday from 5:00 to 11:00 the temperature changed an average of-1.25 each hour. what number represents the total change in temperature, in degrees farenheit, from 5:00 to 11:00?
11 - 5 = 6 hours
6 * -1.25 = 6 (-1 - .25) = -6 - 1.5 = -7.5
To find the total change in temperature from 5:00 to 11:00, we need to calculate the cumulative sum of the temperature changes during this time period.
The given information states that the temperature changed an average of -1.25 degrees Fahrenheit per hour. Since the time period is six hours (from 5:00 to 11:00), we can multiply the average change (-1.25) by the number of hours (6) to find the total change.
Total change = Average change per hour * Number of hours
Total change = -1.25 * 6
Calculating this, we find:
Total change = -7.5 degrees Fahrenheit
Therefore, the total change in temperature from 5:00 to 11:00 is -7.5 degrees Fahrenheit.