If m is the number of magic markers,which variable expression represents the phrase

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ᵗᵒᶠᵘ ˡᵒᵍᵍᶦⁿᵍ ᵒⁿ…
⊹˚ʚ ❑Answer︰D.m-7
⊹˚ʚ ❑Explanation︰subtracting two numbers gives you their difference
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ᵗᵒᶠᵘ ˡᵒᵍᵍⁱⁿᵍ ᵒᶠᶠ...
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