Iodine-125 has a half-life of about 60 days. How many milligrams of a 500 mg sample will remain after 300 days? 0.6 mg 7.8125 mg 15.625 mg 31.25 mg

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) 3x^2 -2x =0 2) 2x^2 =3x 3) 2 * 2 = 2 * 2 4) 6 +2x = 2(4x)