Two adjacent angles have a sum of 100°. The angles have measures ∠1 = 20° and ∠2 = (3x + 15)°. What equation can be used to solve for x?(1 point) Responses
3x+115=20
3x−20=100
3x−100=20
3x+35=100
3x+115=20
3x−20=100
3x−100=20
3x+35=100