Explanation
Correct answer: B.
Choice B is correct. If each tray contains the least number of cookies possible, cookies, then the least number of cookies possible on trays is cookies. If each tray contains the greatest number of cookies possible, cookies, then the greatest number of cookies possible on trays is cookies. If the least number of cookies on trays is and the greatest number of cookies is , then could be the total number of cookies on these trays of cookies because .
Desmos solution:
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Why the other choices are wrong
Choice A
Choice A is incorrect. The least number of cookies on trays is cookies, and the greatest number of cookies on trays is cookies. The value is less than ; therefore, it cannot represent the total number of cookies on trays.
Choice C
Choice C is incorrect. The least number of cookies on trays is cookies, and the greatest number of cookies on trays is cookies. The value is greater than ; therefore, it cannot represent the total number of cookies on trays.
Choice D
Choice D is incorrect. The least number of cookies on trays is cookies, and the greatest number of cookies on trays is cookies. The value is greater than ; therefore, it cannot represent the total number of cookies on trays.