You start by distributing: 8s-4=7s+12
Combine like terms: 8s-7s=12+4
Solve and get your answer: s=16
Axis or sym. is -1.5. vertex is ( -.25,-1.5)
It's 154.687 because first you have to line up the dot which is call and. And you going to add your place holder which is a 0 next to the 2 and the you times
2. Definition of supplementary angles
I’m not too good with proofs but hopefully at least one answer helped lol sorry
