|
A rectangular box with volume 320 ft3 is built with a square base and top. The cost is $1.50 / ft2 for the bottom, $2.50 / ft2 for the sides, and $1 / ft2 for the top. Let x = the length of the base, in feet.
(a) Express the cost of the box as a function of x.
(b) Find the domain of the function.
(c) Graph the function with a graphing calculator.
(d) What dimensions minimize the cost of the box? |
| New search. (Also 1294 free access solutions) |