A poster is to have an area of 180in² with 1-inch margins at the bottom and sides and a 2-inch margin at the top. What dimensions will give the largest printed area?
1) width = __ in, height = __ in
2) width = __ in, height = __ in
3) width = __ in, height = __ in
4) width = __ in, height = __ in