Buying one movie ticket online costs $16.50. Two tickets cost $30.50. Assuming that the relationship is linear, use the drop down menus to complete the recursive formula, the function to represent the cost C of n tickets bought online, and the domain of the function. recursive formula: an=an−1 +
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; a1 =
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function: C(n) =
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+
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domain: {0,
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, . . .}