For what values of kkk does the inequality 2−kx>52 - kx > 52−kx>5 have x=1x = 1x=1 as a solution?
k<−3k < -3k<−3
k>−3k > -3k>−3
k=−3k = -3k=−3
k≤−3k \leq -3k≤−3