Question

The ground temperature at Brigham Airport is 12 degrees Celsius. The temperature decreases by 6.8 degrees Celsius for every increase of 1 kilometer above the ground. What is the temperature outside a plane flying at an altitude of 5 kilometers?

Answer 1

-22 degrees Celsius should be the answer
6.8 times 5 is 34
since 34 is bigger than 12, you take 12 from 34 and add a negative sign, and that would be -22.
You can use a calculator if u want and is allowed too. :)

Answer 2

`-22` degrees Celsius.

Explanation:

Let x represent number of kilometers.

We have been given that the temperature decreases by 6.8 degrees Celsius for every increase of 1 kilometer above the ground. So temperature decreased in x hours would be
`-6.8x`.

The ground temperature at Brigham Airport is 12 degrees Celsius. The temperature at an altitude of x kilometers would be
`12-6.8x`.

To find temperature outside a plane flying at an altitude of 5 kilometers, we will substitute
`x=5` in our expression as:

`12-6.8(5)`

`12-34`

`-22`

Therefore, the temperature outside a plane flying at an altitude of 5 kilometers would be
`-22` degrees Celsius.