Help ASAP asap you have to help me out with the question

Toyland is having a sale. all items are 20% off. how much will you save on an item that usually sells for 95$ explain your

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

It says factor each expression 49x-28?