A) How to write 4x^3 + y^2 - 4y + 36=0 in standard equation (solve for y and complete squares).
B) The pencil manufacturer finds that daily cost c in dollars of producing n dozen pencils is provided by c=(n^2/25,000) -(2n/5) +40000.
i) How many dozen pencils must be made perday to minimize cost?
ii) Find minimum cost? Describe how you got this?