A boat is travelling from point c toward point d which is on the shoreline the shoreline is represented by the line through point a and point b

The answer is "lines CD & AB are perpendicular ".

Step-by-step explanation:

Given points:

Calculating the slope of AB:

Calculating the slope of CD:

simplify the slop:

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°