Question

Multistep: At 7 p.M. Last night, the temperature was 10 degrees Fahrenheit. At 7 a.M. The next morning, the temperature was -2 degrees Fahrenheit. a. By how much did it change from 7 p.M. To 7 a.M.? b. The temperature changed by a steady amount overnight. By much did it change each hour?Immersive Reader

Answer 1

The temperature changed by
`-12^\circ F` overnight.

The temperature changed by
`-1^\circ F` overnight each hour.

Explanation:

Given that:

Temperature at 7 PM last night =
`10^\circ F`

Temperature at 7 AM the next morning =
`-2^\circ F`

a. The change in temperature from 7 PM to 8 AM = Temperature at 7 AM - Temperature at 7 PM

`\Rightarrow -2-10 =\bold{-12^\circ F}`

Negative sign indicates that the temperature has decreased.

b. Change in temperature each hour:

Divide the Change in temperature with the number of hours.

`\Rightarrow (-12)/(12) = \bold{-1^\circ F}`

Negative sign indicates that the temperature has decreased.