The temperature on a summer afternoon is 85°F. Define a variable and write an expression to find the temperature after it changes. Then evaluate your expression for a decrease of 11 degrees Fahrenheit.

Answer 1

Let's define the variable:

Let \( T \) represent the temperature change in degrees Fahrenheit.

The current temperature is 85°F, so the expression for the temperature after a change can be written as:

\[ T_{\text{new}} = 85 - T \]

If there is a decrease of 11 degrees Fahrenheit, we substitute \( T \) with 11 in the expression:

\[ T_{\text{new}} = 85 - 11 \]

Now, we can evaluate this expression:

\[ T_{\text{new}} = 85 - 11 = 74 \]

Therefore, the temperature after it decreases by 11 degrees Fahrenheit will be 74°F.