Due at 12 pls help

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65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

You are saving to buy a bicycle; so far you save 55.00. the bicycle costs 199.00. you earn 9.00 per hour at your job. which inequality represents the possible number of h hours you need to work to buy the bicycle?

Me i’m stuck on all these questions besides the two bottom ones