Select all the ordered pairs that are in the solution set for the inequality graphed below.
(0, 0)

(1, -2)

(-2, 3)

(1, 6)

Problem number 26 of the rhind papyrus says: find a quantity such that when it is added to of itself the result is a 15. the modern day equation that models this problem is x + x = 15. what is the solution to the equation? x = 10 x = 12 x = 15 x = 30