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Mathematics 11 Online
OpenStudy (anonymous):

Sammy is excited about a sale at the video game store. When one video game is purchased at full price, $30, any additional game will cost only $12. The total amount spent on video games can be described by the function f(x) = $18 + $12x, where x represents the number of video games purchased. If Sammy buys 3 video games, what is the value of f(x)? A. $36 B. $42 C. $54 D. $66

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