Can you please help me I have a test tomorrow

Which statement best describes a square? a. a special rectangle that has four right angles b. a special trapezoid that has four sides of equal length c. a special rectangle that has four sides of equal length d. a special trapezoid that has four right angles

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Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.