Answer:
x=-9
Step-by-step explanation:
12+4x=5x
x=12
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Answer:
The second group represents function f.
Step-by-step explanation:
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The answer is C
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Answer:
second option
Step-by-step explanation:
The perimeter P is the sum of the 3 sides, then
P = 4x² + 3 + 2x - 5 + x + 11 ← collect like terms
= 4x² + 3x + 9