No cause if I helmet cost $42 , 7 helmets will be $294.
 $42 = 1 helmet
 $? = 7 helmets
 cross multiply = 42 × 7 = $294
        
             
        
        
        
Hello : 
125.32  > 125.093 .. because : 3 <span>> 0</span>
        
                    
             
        
        
        
Mean (Average)	48
Median	47.5
Range	66
Mode	72, appeared 2 times
Geometric Mean	41.680398411848
Largest	81
Smallest	15
Sum	480
Count	10
        
             
        
        
        
x-17= 23
move -17 to the other side
sign changes from -17 to +17
x-17+17= 23+17
x= 23+17
Answer: 
x= 40