Which graph represents a function with direct variation

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

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