Alright, I've been stuck on this one for about an hour. This is the question verbatim. Any help would be appreciated.
'You are designing a rectangular poster to contain 100in^2 of printing with a 4-in margin at the top and bottom and a 1-in margin at each side. what overall dimensions will minimize the amount of paper used?'
All I need is a second equation, or even the correct first would be a help. As it is I trial-errored out an estimate at 15x6, or 23x8 with margins.Thanks for taking the time to read this far,