What are all the parts of an algebraic expression and can you define them?

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73

Adele is five years older than timothy. in three years, timothy will be 2/3 of adele’s age. what is adele‘s current age?