Answer:
Step-by-step explanation:do you have the answers to choose from?
 
        
                    
             
        
        
        
Answer:
$57.5 is the total cost to build the pen.
Step-by-step explanation:
We are given the following in the question:
A livestock pen is built in the shape of a rectangle.
The length of rectangle is two times the width.
Let l be the length of rectangle and w be the width of rectangle. Thus, we can write

Perimeter = 30 feet

Putting values,

The length of rectangle is 10 feet and width of rectangle is 5 feet.
If the material used to build the pen is $ 1.75 per foot for the longer sides and $ 2.25 per foot for the shorter sides 
Cost of building =

Thus, $57.5 is the total cost to build the pen.
 
        
             
        
        
        
The equation must equal 84, so you can eliminate B and D.
Chin charges a rate for 2 hours, then charges a reduced rate for 4 hours. There are no discounts present in his rate, so you can eliminate A.
The equation for Chin's charges can be found by the equation C. 2x + 4y = 84.
        
                    
             
        
        
        
Answer:
Yo I got the same question as you lmk if u got it bro
Step-by-step explanation: