Which one is keisha’s mistake?

What could explain what happened when the time was equal to 120 minutes

The perimeter of an equilateral triangle is 4 cm more than the perimeter of a square and the length of a side of the triangle is 8 cm more than the length of a side of the aware. find the length of a side of the equilateral triangle

4. a single woman uses an online cash flow calculator which reveals a cash flow of 203. what does this mean?