To calculate the temperature in Orlando, Florida, after 5 hours, we start with the current temperature of 75 degrees and determine how much it will drop over that time period.
The temperature is dropping by 3 degrees every hour. Therefore, after 5 hours, the total temperature drop will be:
\[ 3 \text{ degrees/hour} \times 5 \text{ hours} = 15 \text{ degrees} \]
Subtracting the total drop from the current temperature gives us:
\[ 75 \text{ degrees} - 15 \text{ degrees} = 60 \text{ degrees} \]
Thus, after 5 hours, the temperature will be 60 degrees.