题目内容
计算 (2
－
)´
．
解： (2－
)×
＝2×－× ··········································································· 2分
＝12
－································································································ 4分
＝11．······································································································ 6分
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的长为 cm．
如图，是某卖场国产大米牌手机的宣传广告．
 |
（1）你认为大米手机5月份的销售量必定是三个品牌手机中最高的吗？通过计算说明你的理由．
（2）若各品牌手机2015年4月的销售量如下：
| 手机品牌 | 芒果手机 | 四星手机 | 大米手机 |
| 销售量（台） | 200 | 80 | 120 |
求该卖场5月份三个品牌手机销售量的平均增长率．
