exam Maths Puzzle Numerical Ability

what is quadrant 1 2 3 &4

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Stephanie drove at an average rate of 50 miles per hour for 2 hours and then increased her average rate by 50% for the next 3 hours. Her average rate of speed for the 5 hours was t If the sides of a square are decreased by 3 cm, the area is decreased by 81cm^2. What were the dimensions of the original square?