Answer:
 $48 per unit
Step-by-step explanation:
Increasing the price by $5 reduces demand by 20 units, so the slope of the curve is -4 units per dollar. This lets us write a demand equation as ...
 q = -4(p -50) +184
 q = -4p + 384
 q = 4(96 -p)
The revenue is the product of price and demand:
 r = pq = 4p(96 -p)
This is the equation of a quadratic curve that opens downward and has zeros at p=0 and p=96. The vertex (maximum) will be halfway between the zeros, at ...
 p = (0+96)/2 = 48
A price of $48 per unit will yield a maximum total revenue.
 
        
             
        
        
        
Step-by-step explanation:
I believe the answer is 
The fuction roughly matches the data
 
        
                    
             
        
        
        
54÷x
Hope this helped................