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Eugene and Penny started a job in sales on the same day. Eugene's sales for the first month were r dollars and each month after the first his sales for that month were twice his sales for the preceding month. Penny's sales for the first month were 10r dollars, and each month after the first her sales for that month were 10r dollars more than her sales for the preceding month. Which of the following statements are true?
Indicate all such statements.
A,B,C显示答案
· 相关考点
6.2.2 等比数列 6.2.1 等差数列
6.2.2 等比数列
6.2.1 等差数列
以上解析由 考满分老师提供。
