Answer:
Triangle
Step-by-step explanation:
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triangle
The rectangle and arrow both have right angles, so they are crossed out. The pentagon has obtuse angles, so it is also not the answer
15
-1-5=-6
21-6=15
y = 2x - 5
y - 3 = 2 (x - 4)
y = 2x - 8 + 3
16x-7
4x+12x-7
=16x-7
