An architecture firm creates blueprints for office buildings. last week, they produced four rectangular blueprints for four different projects. project a: a 20-inch by 15-inch blueprint with a scale of 1 inch to 4 feet and a projected cost of $22,000. project b: a 10-inch by 8-inch blueprint with a scale of 1 inch to 8 feet and a projected cost of $25,000. project c: a 15-inch by 12-inch blueprint with a scale of 1 inch to 6 feet and a projected cost of $27,000. project d: an 8-inch by 6-inch blueprint with a scale of 1 inch to 12 feet and a projected cost of $30,000. order the projects from greatest to least projected cost per square foot of the actual offices. project c project b project d project a