Help please. almost done.

For a school newspaper article, cienna conducted a survey to find out students’ favorite subjects. she polled all the students in mrs. lopez’s advanced dance class. why is her data likely to be skewed? honors dance students are more likely to enjoy dance than students in the general population, so dance may be overrepresented. cienna should have interviewed all the students in the school to get more accurate data. honors dance students are more likely to enjoy dance than students in the general population, so dance will be underrepresented. cienna should have interviewed only every other student in the class to avoid having too many people.

How many sides does a regular polygon have if each exterior angle measures 72a.3b.4c.5d.6

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?