Which sentence contains an error?

the witness did not state weather the victim was on the east or west side of the street.
the accident took place at 6: 38 p. m.
the shelter has both dogs and cats available for adoption.
the festival will be held on thursday, april 26th.

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