Question

The temperature at noon was 10 degrees. For the next 3 hours it dropped at a rate of 3 degrees an hour. Express this change in temperature as an integer.

Answer 1

Change in temperature = -9 degrees

Explanation:

Given

`Start Temperature = 10 deg`

`Change = 3 deg/hr`

`Time= 3hr`

Required

Change in temperature;

First, the total change in 3 hours has to be solved for. This is done as follows:

`Total Change = Change* Time`

`Total Change = 3 deg/hr * 3 hr`

`Total Change = 9 deg`

From the question, we understand that the temperature dropped.

So, we can conclude that the temperature changed by -9 degrees;

This means that at the end of the third hour is temperature is 1 degrees