What's from least to greatest? or how do i simplify these?

What is the multiplicative rate of change of the exponential function shown on the graph?

In a school 2/3 of the students study a language of those who study a language 2/5 study french

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