WILL GIVE BRAINLIEST <3 One cold night the temperature was 0 degrees at 8 p. m. The temperature dropped at a constant rate from 8 p. m. to midnight. At midnight the temperature was −16.8 degrees.

What was the temperature at 9 p. m.?

-4.2 degrees

Step-by-step explanation:

Each hour the temperature drops by 4.2 degrees. If you start with 0 and take away 4.2 degrees you end up with -4.2 degrees. Hope this helps!

At 9 p.m., the temperature was -4.2 degrees.

Step-by-step explanation:

The amount of time from 8 p.m. to midnight is 4 hours.

In 4 hours, the temperature changed -16.8 degrees.

The rate of change of temperature is

-16.8 degrees / 4 hours = -4.2 degrees/hour

The temperature changes -4.2 degree in each hour.

From 8 p.m. to 9 p.m., it is 1 hour, so the temperature went from 0 degrees to -4.2 degrees.

At 9 p.m., the temperature was -4.2 degrees.