a=180-117=63
b=180-81-63=36
so angle a is 63, and angle b is 36
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$76.50 - $8.50 = 9 weeks
i am a mathematics teacher. if anything to ask please pm me
Answer:
y = -3x -72
Step-by-step explanation:

Find the inverse of that function:
y = e^x
The correct answer is right.
An acute one would have all three acute, while an obtuse one would have at least one obtuse angle.