answer: (c) m∠qpo + (2x + 16)° = 180°
step-by-step explanation:
the opposite angles of a quadrilateral are supplementary.
so, ∠o + ∠q = 180° and ∠p + ∠r = 180°
since ∠r = 2x + 16°, we can use substitution as follows:
∠p + ∠r = 180°
∠p + (2x + 16)° = 180°