Hi guy's how are u all are fine

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?

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

Find the solution(s) to x^2-14+49=0