The graph shows the height of a willow oak tree write an equation of the line

c^2-b^2=a^2

if you're given the shadow of the tree and an angle you can find C, square it, then subtract the length of the shadow (squared) from the C^2, then take the square root of A. 

I think. that's how I would do it...

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°