Question

The U.S. Maritime Administration estimated that the cost per ton of building an oil tanker could be represented by the model f(x)=102,000/x+235 where y is the cost in dollars per ton and x is the tons (in thousands). What size of oil tanker (in thousands of tons) can be built for $350 per ton?

Answer 1

Find f'(x) and equate it to 0. Also find f''(x) and substitute solutions of f'(x) = 0

Answer 2

i'm lost. completely on this.

Answer 3

Find f'(x) and f''(x) first.