Answer:
It's an irrational number
Step-by-step explanation:
Examples:
√2 = 1.4142135623730950488016887242096980785696718...
π = 3.14159265358979323846264338327950288419716939...
e =  2.718281828459045235360287...
∛10 = 2.1544346900318837217592935665193504952593449421921...
and more
If the number has a finite or repeating decimal, then it is a rational number.
Examples:
2.75
-1.3333...
0.4545454545...
 
        
                    
             
        
        
        
Answer:
5x+10
Step-by-step explanation:
Distribute:
=(5)(x)+(5)(3)+−5
=5x+15+−5
Combine Like Terms:
=5x+15+−5
=(5x)+(15+−5)
=5x+10
 
        
             
        
        
        
Answer: x^2 + 9x + 20
Step-by-step explanation:
Foil Method: (a + b) (c + d) = ac + ad + bc + bd
Lets say: 
a = x
b = 5
c = x 
d = 4 
Plugging in the numbers: xx + 4x + 5x + 5*4 
Combine like terms: 
xx = x^2
4x + 5x = 9x 
5 * 4 = 20 
You're then left with: x^2 + 9x + 20
 
        
             
        
        
        
Answer:
Price demand function 
Step-by-step explanation:
The price demand function is the function in which there is a relationship between the demand and the price of the product
The Price demand function is 


hence, the price demand function represents that there is a relationship that lies between the demand and the price