Of two numbers, one is 7 more than the other. find the numbers if their sum is 21

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

Solve the equation by completing the square. x^2+2x=17

Use this graph to find the cost of 6 show tickets