How many ways are there to split 12 people into 4 groups with 3 people in each group?

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 expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

In a column proof the right column states your reasons