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f(x) = 7x + 3 × 2
f(3) = ?
f(5) = ?
f(7) = ?
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f(x) = 7x + 3 × 2
f(x) = 7x + 3 × 2
f(3) = 7(3) + 6
f(3) = 21 + 6
f(3) = 27
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f(x) = 7x + 3 × 2
f(5) = 7(5) + 6
f(5) = 35 + 6
f(5) = 41
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f(x) = 7x + 3 × 2
f(7) = 7(7) + 6
f(7) = 49 + 6
f(7) = 55