The profit from the sale of a certain appliance increases, though not proportionally, with the number of units sold. Did the profit exceed $4 million on sales of 380,000 units?
(1)The profit exceeded $2 million on sales of 200,000 units.
(2)The profit exceeded $5 million on sales of 350,000 units.
1不够,2 怎么看? 谢谢
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【请May老师回答】这题鸡精提供的答案是D 可是我觉得第二个条件不能得出呢 假设n三次方是x平方 除以n平方 是可以得到x/ n 平方 但是x/n 不一定是整数呀?