Final answer:
The rate at which the temperature was falling as storm clouds gathered was 5.33° per hour, calculated by dividing the total temperature decrease of 4° by the duration of 3/4 hour.
Step-by-step explanation:
When storm clouds gathered and the temperature fell 4° in 3/4 of an hour, we need to calculate the rate at which the temperature was falling.
To find the rate of temperature change, we divide the total change in temperature by the total time it took for that change to occur. In this case:
Change in temperature = 4°
Time taken = 3/4 hour
The temperature change rate is calculated as follows:
Rate of temperature fall = Total change in temperature / Total time
Rate of temperature fall = 4° / (3/4 hour)
Rate of temperature fall = 4° / 0.75 hours
Rate of temperature fall = 5.33° per hour.
Therefore, the temperature was falling at a rate of approximately 5.33° per hour as the storm clouds gathered.