A new drug and alcohol rehabilitation program performs outreach for members of the community. The number of participants for a 4-week period is given in the table. (See Example 3) Week number Number of participants 2 3 4 66 82 34 50 a. Based on the data given, does the number of participants follow an arithmetic progression? b. Write an expression for the nth term of the sequence representing the number of participants, where n represents the week number. C. Predict the number of participants in week 10 if this trend continues.

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