A decagon has angles that measure 120°, 130°, 165°, 135º, 170°, 140°, 160°, 140°, 145°, and s. What is s?

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Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes. she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?