Please help
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Use set builder notation to represent the following set: { -3, -2, -1, 0}

Which shows the correct lengths of side c in both scales? scale 1: 45 m; scale 2: 60 m scale 1: 60 m; scale 2: 45 m scale 1: 36 m; scale 2: 27 m scale 1: 27 m; scale 2: 36 m mark this and return save and exit

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?