Answer:
Answer: A real number that is not rational is called irrational. Irrational numbers include √2, π, e, and φ. The decimal expansion of an irrational number continues without repeating.
 
        
             
        
        
        
Answer:
0%
Step-by-step explanation:
 
        
             
        
        
        
Given:
The  function that represents how the amount of fuel changes as a function of distance flown is

where x represents miles flown, and f(x) represents the amount of fuel remaining.
To find:
The rate of change for this scenario.
Solution:
The slope intercept form of a linear function is 
 ...(i)
        ...(i)
Where, m is the slope or rate of change and b is the y-intercept.
We have,
 ...(ii)
        ...(ii)
On comparing (i) and (ii), we get

Therefore, the rate of change for this scenario is -0.9. It means, the amount of fuel in the airplane is decreasing by 0.9 gallons per mile.