Regina has started making baby quilts to sell at a craft fair. the inside of each quilt will measure four feet by five feet and will be surrounded by a border of uniform width. she wants each quilt to have a total area (including the border) of 30 square feet. find the equivalent equations to find the width of the border given that the border is x. select all that apply.

1: (4+x)(5+x)=30
2: (4+2x)(5+2x)=30
3: 4x^2 + 20 = 30
4: 4x^2 +18x+20=30
5: (5+x)(4+x)=30
6: (x+4)(x+5)=30