Question

At midnight, the temperature was -8oF. At noon, the temperature was 23oF. Which expression represents the increase in temperature?

Answer 1

Answer:

The required expression is either 23°F - (-8°F) and the temperature increased by 31°F.

Step-by-step explanation:

At midnight, the temperature was -8°F. At noon, the temperature was 23°F.

We need to find the expression that represents the increase in temperature.

Increase in temperature = Temperature at noon - Temperature at midnight

Increase in temperature = 23°F - (-8°F)

Increase in temperature = 23°F + 8°F

Increase in temperature = (23+8)°F

Increase in temperature = 31°F

Therefore the required expression is either 23°F - (-8°F) and the temperature increased by 31°F.

Answer 2

Answer:

$23^oF-(-8^oF)$

Step-by-step explanation:

We have been given that at midnight, the temperature was $-8^oF$. At noon, the temperature was $23^oF$.

Since our temperature has increased to 23 degree Fahrenheit from -8 degree Fahrenheit, we can represent this increase in temperature as:

$\text{The increase in temperature}=23^oF-(-8^oF)$

Therefore, the expression $23^oF-(-8^oF)$ represents the increase in temperature.