Hello there!
The correct answer is D. 8.
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Sarah got £48, Liam got £32, and Emily got £112
        
             
        
        
        
Answer:
$204
Step-by-step explanation:
The question is at what price x will the company maximize revenue.
The revenue function is:

The price for which the derivate of the revenue function is zero is the price the maximizes revenue:

The company will maximize its revenue when the price is $204.
 
        
             
        
        
        
Answer:c
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
d
Step-by-step explanation: