Please please help its a math test and I gotta get a good grade and I have no idea what I’m doing

The data represents the semester exam scores of 8 students in a math course. {51,91,46,30,36,50,73,80} what is the five-number summary?

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?