Answer:
Unit rate of change = -4.2°F/hour
Step-by-step explanation:
Assuming a constant rate of change, a relationship between the change of temperature as a function of time (in hours) can be described as follows:

There is a temperature drop from 12pm to 5pm, which explains the rate of change being negative. This rate means that at every hour that goes by, the temperature drops by 4.2 degrees.
Plugging x in, we have -x/3+2, which is -2/3+2=1.3 (with the 3 repeating).
To graph it, try desmos.com if you need help :)
Answer:
8x + 10
(I'm not if it's correct)
<span>A) 6,501,500 is the answer to your question :)</span>