What is the value of x in the figure?

What is a rational number between 9.5 and 9.7

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.

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1