X/3.5=-2.4 help me please its 20 points

What is the value of the expression below? (81^2)^1/8

Given: hf || jk; hg ? jg prove: fhg ? kjg to prove that the triangles are congruent by asa, which statement and reason could be used as part of the proof? fgh ? kgj because vertical angles are congruent. jkg ? hfg because vertical angles are congruent. fhg ? jkg because right angles are congruent. hfg ? kjg because alternate interior angles are congruent.

Will give a: 122 b: 90 c: 48 d: 180