this is very confusing ive been trying to do this but keep getting the wrong answer

cerenetie  Feb 22, 2018

1.  Once we fold the sides up....the dimensions of the  base will be


(8 - 2x) (10 - 2x)


And the height will be x


So....the volume, V, is   area of the base * height  =


a)  V = (8 - 2x) (10 - 2x) x


b)  Here's a graph   of the function :




The value of x that gives the max volume is when we look at the top of the curve between x  = 0  and x = 4....this value is :   x  ≈ 1.5  in




cool cool cool

CPhill  Feb 22, 2018

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