First, find the equation of the line. 
the slope is given, so y=-5x+b
now use the given point to find b: 228=-5*(-3)+b, b=228-15=213
so the equation of the line is y=-5x+213
when y=517:                         517=-5x+213
                                              304=-5x
                                              x=-60.8
                                             
        
             
        
        
        
Answer:
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Explanation:
 
        
             
        
        
        
Answer:
okay, thanks for letting me know. I'll work on it and get back to you with the results asap