Please help. Also please show your work. Y/5 - 2/5

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

Abag of jelly beans contain 13 pink, green, 20 yellow, 10 black, 7 red, and 11 orange jelly beans. approximately what percent of the jelly beans are pink and yellow?

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?