P-23=-3
 +23 +23
P=20
so the answer is A
        
             
        
        
        
Answer:
7/3
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Y= 40 
Step-by-step explanation:
I know the y equals 40 because I used 

But for z and x I got stuck, so I hope I helped you a little to move forward with this problem. 
YOU CAN DO THIS!!!!!
 
        
             
        
        
        
To minimize the cost, we take the straight distance from the refinery to the other side of the river as 2 km. Also, the 7 km will be the distance that has to be traveled by the pipeline in land. The total cost, C, is therefore,
               total cost =   (2 km)($800,000/km) + (7 km)($400,000 /km)
                    total cost = $4,400,000
Thus, the total cost of the pipeline is approximately $4,400,000.00. 
 
        
             
        
        
        
Answer:
B. 5a + 8p = 155; p = a - 5
Step-by-step explanation:
B