OG详解-OG4 数学1 Q11

Choice A is correct. The number of birds can be found by calculating the value of b when r =16 in the given equation. Substituting 16 for r in the given equation yields 2.5b +5(16)= 80, or 2.5b + 80 = 80. Subtracting 80 from both sides of this equation yields 2.5b = 0. Dividing both sides of this equation by 2.5 yields b = 0. Therefore, if the business cares for 16 reptiles on a given day, it can care for 0 birds on this day.
Choice B is incorrect and may result from conceptual or calculation errors. Choice C is incorrect and may result from conceptual or calculation errors. Choice D is incorrect and may result from conceptual or calculation errors.