Answer:
The equation to represent the rate of receding water level is                     L = 34  .
   .
Step-by-step explanation:
Given as :
The initial level of water in river = 34 feet
The rate of receding water level = 0.5 foot per day
Or, The rate of percentage of receding water level = 50 % per day
Let the level of water after d days = L
Now, 
The level of water after d days = initial level of water × ( 
I.e L = 34 × (  
 
∴  L = 34 × 
Hence The equation to represent the rate of receding water level is                L = 34  . Answer
   . Answer
 
        
             
        
        
        
Answer:
Now plot those points in graph and find intersection hope it helps you.......
 
        
             
        
        
        
Answer:
2765
Step-by-step explanation:
5x500=2500
5x50=250
5x3=15
2500+250+15=2765
 
        
                    
             
        
        
        
Given:
Expression is

To prove:
If r is any rational number, then  is rational.
 is rational. 
Step-by-step explanation:
Property 1: Every integer is a rational number. It is Theorem 4.3.1. 
Property 2: The sum of any two rational numbers is rational. It is Theorem 4.3.2.
Property 3: The product of any two rational numbers is rational. It is Exercise 15 in Section 4.3.  
Let r be any rational number.
We have,

It can be written as

Now, 
3, -2 and 4 are rational numbers by property 1.
 is rational by Property 3.
 is rational by Property 3.
 are rational by Property 3.
 are rational by Property 3.
 is rational by property 2.
 is rational by property 2.
So,  is rational.
 is rational.
Hence proved.