Answer:
Choice B. 1/4 x + 4
Step-by-step explanation:
(1/2x+6)-(1/4x+2)
1/2x + 6 - 1/4x - 2
1/2 = 2/4
combine same values
1/4 x + 4
Air Conditioner........
Answer: x=3
7 x 3 + 13 x 2 + 8 x + 9
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