The temperature on a summer afternoon is 76°F. Define a variable and write an expression to find the temperature after it changes. Then evaluate your expression for a decrease of 8 degrees Fahrenheit.
76 - c; 76 - (-8) = 84; 84°F
8 + c; 8 + (-76) = 84; 84°F
8 - c; 8 - (-76) = 68; 68°F
76 + c; 76 + (-8) = 68; 68°F
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