Option 1 because since it’s less than not less than or equal to, it stays opened. also you follow the direction that the less than sign is pointing towards.
Answer:
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2x +9 = 3x - 1
2x - 3x = -9 -1
-x = -10
x = 10
2(10) + 9 = 29
so angles 1 and 3 measure 29 degrees
360 - 2(29) = 302 degrees
302/2 = 151 degrees
so angles 1 and 3 measure 151 degrees
