Assessment started: undefined. Item 1
Which ordered pairs in the form (x, y) are solutions to the equation 3x−4y=21?

Select each correct answer.

(−1, −6)

(−3, 3)

(11, 3)

(7, 0)

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