Help again please ?? I have 5 more that needs to be answer also ..

Scenario: susan wants to make 2 square flags to sell at a crafts fair. the fabric she wants to buy is 3 meters wide. she doesn't want any fabric left over. what's the least amount of fabric she should buy? question: which equation will susan solve her problem? note: let x represent the length of 1 side of the flag. options: 1) 2x^2 = 4x 2) 8 +2x = 2(4x) 3) 2 * 2 = 4 * 2 4) 4x^2 -2x = 0

Isaac wants the equation below to have no solution when the missing number is placed in the box. which number should he place in the box?

Find the value of x. also give me an explanation so i can complete it to other questions as well, : )