Answer:
Both are equations, one is linear, one is not linear boom
Step-by-step explanation:
 
        
             
        
        
        
Step-by-step explanation:
Consider a function 
f
(
x
)
 which is twice differentiable. The graph of such a function will be concave upwards in the intervals where the second derivative is positive and the graph will be concave downwards in the intervals where the second derivative is negative. To find these intervals we need to find the inflection points i.e. the x-values where the second derivative is 0.
 
        
             
        
        
        
The correct answer is:  [B]:  " s² + 5s " .
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A = s(s+5) = s² + 5s ; 
→ which is:  Answer choice:  [B] .
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C= 50y+20x
Where y is the number of boxes holding 50 pieces each and x is the number of boxes holding 20 pieces each.