On a given morning the temperature was 81 F. the temperature dropped 9 F and then rose 5 F. how much does the temperature need to rise or fall to return to the initial temperature of 81 F

Answer 1

Let's calculate the change in temperature step by step:

1. The initial temperature was 81°F.
2. The temperature dropped by 9°F: \[ 81°F - 9°F = 72°F \]
3. The temperature then rose by 5°F: \[ 72°F + 5°F = 77°F \]

Now, we need to determine how much the temperature needs to change to return to the initial temperature of 81°F:

\[ 81°F - 77°F = 4°F \]

Therefore, the temperature needs to rise by 4°F to return to the initial temperature of 81°F.