Question

The outdoor temperature was 8 degrees at midnight. The tempature declined 5 degrees during each of the of the next 3 hours. What was the temperature at 3 am

Answer 1

To do the math for this question, you would need to multiply the 5 degrees that it goes down each hour and multiply it by 3 hours to figure out how my degrees it has gone down in three hours. 5 degrees x 3 hours = 15 degrees in 3 hours Then you take the 8 degrees from midnight and subtract the 15 degrees to figure out what the temperature was at 3am. 8 - 15 = -7 degrees If I did the math correctly, the answer should be -7 degrees. Hope this helps!

Answer 2

`-7` degrees.

Explanation:

Let x represent number of hours.

We have been given that the outdoor temperature declined 5 degrees during each of the of the next 3 hours. So temperature decline in each hour would be
`-5x`.

The outdoor temperature at midnight was 8 degrees. The temperature x hours after midnight would be
`8-5x`.

To find the temperature at 3 am, we will substitute
`x=3` in the expression as:

`8-5(3)`

`8-15=-7`

Therefore, the outdoor temperature was
`-7` degrees at 3 am.