Can you help me pls

Farmer dave harvested his corn. he stored 5/9 of his corn in one large silo and 3/4 of the remaining corn in a small silo. the rest was taken to a market to be sold. a. what fraction of the corn was stored in the small silo? 10 points

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

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