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vbbbbbbbbbbbbbbbbbdnnnnnAnswer:
Step-by-step explanation:
 
        
             
        
        
        
Without the graph it is impossible the find the value of K
        
             
        
        
        
Because

therefore
f(x) = (x-3)(2x² + 10x - 1) + k, where k =  constant.
Because f(3) = 4, therefore k =4.
The polynomial is
f(x) = 2x³ + 10x² - x - 6x² - 30x + 3 + 4
      = 2x³ + 4x² - 31x + 7
Answer:  f(x) = 2x³ + 4x² - 31x + 7