This was originally posted on another student's thread.
The forecast predicts that the temperature will change from 15° Fahrenheit to 3° Fahrenheit on Saturday.
a. Write an expression that represents the change in temperatures for Saturday.
b. What is the expected temperature change?
c. If the temperature actually changes by 5° Fahrenheit more than predicted, what will be the change in
temperature?
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posted by lola
today at 11:54am
a. 15 - 3 = ?
b. ?
c. ? + 5 = ??
To answer this question, we need to understand how to calculate the change in temperatures based on the given information.
a. To write an expression that represents the change in temperatures for Saturday, we subtract the initial temperature from the final temperature. In this case, the initial temperature is 15° Fahrenheit and the final temperature is 3° Fahrenheit. So the expression for the change in temperatures is:
Change in temperatures = Final temperature - Initial temperature
Therefore, the expression for the change in temperatures for Saturday is:
Change in temperatures = 3° Fahrenheit - 15° Fahrenheit
b. To find the expected temperature change, we simply calculate the difference between the final temperature and the initial temperature. Using the same values as in part (a), the expected temperature change is:
Expected temperature change = Final temperature - Initial temperature
= 3° Fahrenheit - 15° Fahrenheit
= -12° Fahrenheit
Therefore, the expected temperature change is -12° Fahrenheit. Note that the negative sign indicates a decrease in temperature.
c. If the temperature actually changes by 5° Fahrenheit more than predicted, we can add 5° to the previously calculated expected temperature change. So, the change in temperature in this scenario would be:
Change in temperature = Expected temperature change + Additional change
= -12° Fahrenheit + 5° Fahrenheit
= -7° Fahrenheit
Therefore, the change in temperature would be -7° Fahrenheit if the temperature actually changes by 5° Fahrenheit more than predicted. Again, the negative sign denotes a decrease in temperature.