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I just can't do this problem, plz help!

 

Much thanks to anyone who helps!

 Mar 4, 2019
edited by Guest  Mar 4, 2019
 #1
avatar+98130 
+1

Break-even point   is where  R(h) = C(h)

 

So

 

10 + 30h  = 5h^2 - 25        subtract 10, 30h from both sides

 

0 = 5h^2 - 30h - 35           divide both sides by   5

 

h^2 - 6h - 7   = 0         factor

 

(h - 7) ( h + 1) = 0

 

Set each factor to  0   and solve for h and we get that    h = 7  or h = -1

 

Only the first answer makes sense.....so h =  7   (hours)

 

cool cool cool

 Mar 4, 2019

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