Chocolate Box Company is going to make open-topped boxes out of 7 × 11-inch rectangles of cardboard by cutting squares out of the corners and folding up the sides. What is the largest volume box it can make this way? (Round your answer to one decimal place.)

Answer 1

what are the answer choices?

Answer 2

the volume v is
v = x(7-2x)(11-2x) = 4x^3-36x+77x

so, find x where dv/dx = 0

Answer 3

no answer choices

Answer 4

so, do the math!
what is dv/dx?