Answer:
  =615.44 m^2
Step-by-step explanation:
The area of the circle is given by
A = pi r^2
    = pi (14)^2
    = (3.14) 14^2
    =615.44 m^2
 
        
             
        
        
        
If you can label your graph then I could a lot more, but 
f(x) = 5x
Ordered pairs : (1,5) (0,0) (2,10)
Domain [0,infinity)
Range [0, infinity)
Mapping
0 0
1. 5
2. 10
3. 15
4. 20
5. 25
        
             
        
        
        
Step-by-step explanation:

 
        
             
        
        
        
                                                       Question 1)
Given
The expression is 5xy
To determine
Find the value of 5xy if x = 2 and y = 3
5xy
substitute x = 2 and y = 3
5xy = 5(2)(3)
       = 5(6)
       = 30
Therefore, the value of 5xy = 30 if x = 2 and y = 3.
<em>Note: your remaining questions are not mentioned. But, the procedure may remain the same. Hopefully, your concept will be cleared anyway.</em>