Question

a freezing system starts cooling the room at the rate of 4 degree per hour if at the beginning the temperature of the room is 30 degree Celsius find the number of hours it takes to lower down the room temperature to -2 degree​

Answer 1

Answer:

8 hours is the answer. Hope this will help pls mark me as brainliest.

Step-by-step explanation:

4 or -4 because the room is cooling down the temperature is depleting -4 × 8 = -32 and 30 is the present temperature so 30 - 32 = -2.