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14 March, 13:10

THe cost of a hamburger is $2.50. Each additional hamburger cost $2.00. Sully wrote this explicit rule to explain the sequence of costs: f (n) = 2 + 2.5 (n-1). Using the rule, he found the cost of 12 hamburgers to be 29.50. Is this number correct?

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  1. 14 March, 16:12
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    yes, it is correct

    you just plug in the 12 where the n is
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