Answer:
1. -√19 2. 4.56 3. √21 4. 23/5
Step-by-step explanation:
Answer: 
Step-by-step explanation:
Given
Propane produced heat energy of 
The volume of the tank is 
The energy produced by this propane tank is

Assuming the function is x^2
It is A. Let me know if the answer is correct! :)