Which ordered pairs are solutions to the inequality y-4x > -5?

(-4,2)
(1,-1)
(4,0)
(-2,1)
(5,-2)

X+ y = k 2x + 3y = k + 1 the point of intersection of the lines has an x-coordinate of a.2k + 1 b.-2k + 1 c.2k - 1

Could somebody me with this radical simplification?

Simplify (2^5/3^2)^4 a. 2^20/3^8 b. 2^9/3^8 c. 8^5/12^2 d. 2/3^2