Answer:50,400
Step-by-step explanation:
 
        
             
        
        
        
Answer:
80.2
Step-by-step explanation:
 
        
             
        
        
        
Answer:
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Step-by-step explanation:
Hello, to be the correct equation of line the given equation must satisfy all the points lying on that line. 
I've solved all the equation for given both the points and concluded Option B & C are the correct equation for the line. The image of solution I'm attaching with this answer.

 
        
             
        
        
        
Let x be your first alloy
2/5x+7/10(30-x)=1/2(30)
4x+210-7x=150
3x=60
x=20
So, you need 20 lbs of the first alloy, and 10 parts of the second to make 30 lbs of half iron and half silver alloy!
        
             
        
        
        
The inequality that represents the possible combinations of candy bars and  lollipops that he can buy is given by:

<h3>What is the inequality that models this situation?</h3>
The total price can be no more than $28, hence:

Each candy bar costs $0.45 and each lollipop costs $0.25. x is the number of candy bars and y of lollipops. Hence, the total price is given by:
T = 0.45x + 0.25y.
Hence, the inequality that models the situation is:

More can be learned about inequalities at brainly.com/question/25235995