Help me solve this please i been looking for help all day

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

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 type of graph would allow us to quickly see how many students between 100 and 200 students were treated?