Answer:
C(x) = 
Step-by-step explanation:
Data provided in the question:
Area of the field = 3600 square feet
Fencing charges = $3.50 per foot
Let the side along the river be 'x' feet and the other side of the 'B'
now,
Area of rectangle = Bx = 3600 square feet
or
B =  feet
 feet
and total length to be fenced = x + 2B
therefore, 
Total cost of fencing = Fencing charges × total length to be fenced
or
Total cost of fencing = $3.50 × ( x + 2B )
substituting the value of B from (1)
Total cost of fencing, C(x) = 
or
C(x) = 
 
        
             
        
        
        
Answer: the height of the prism is 14 cm.
Step-by-step explanation:
The formula for determining the volume of a rectangular prism is expressed as 
Volume = length × height × width
Volume = LWH
The length of the prism is 3 times the width. It means that 
L = 3W
The height is twice the width. This means that 
H = 2W
Therefore,
Volume = 3W × × W × 2W = 6W³
The volume of a rectangular prism is 2,058 cubic cm. This means that
2058 = 6W³
Dividing through by 6, it becomes
343 = W³
W = 7
Therefore, the height of the prism would be 
H = 2W = 2 × 7
H = 14 cm
 
        
             
        
        
        
The pattern is - 8 so the answer is 12.
        
             
        
        
        
System A: The system has exactly one solution (3,1)
System B: No Solution 
System C: Infinite many solutions