Answer:
3(25π/2) + 100 = 217.8097
Step-by-step explanation:
Postulates cannot be proven. They are assumptions that are made. There is no proof for a postulate. Postulates are used without proof.
The answer is the temperature goes down 2.8° every hour and the expression is x=-11.2/4 because 4 is how many hours between 6pm and 10pm and its -11.2 because that was how much the temperature dropped from 6pm to 10pm