Color in all but 1 column. (Going up and down) the colored in part is the answer.
Step-by-step explanation:
Olivia is correct. Each O is opposite of the angle θ, and each A is adjacent.
Paula's first triangle was correct. But on the second triangle, she reversed the O and A.
Your answer is 9. Hope this helps, if not, please comment below!
X^2 -8x = 9 is the rewritten version
I used completing the square to solve it and the work it attached below