<img align="middle" alt="undefined" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»f«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«mo»=«/mo»«mn»5«/mn»«mi»x«/mi»«mo»-«/mo»«mn»2«/mn»«mspace linebreak=¨newline¨/»«mi»f«/mi»«mo»(«/mo»«mi»k«/mi»«mo»)«/mo»«mo»=«/mo»«mn»5«/mn»«mi»k«/mi»«mo»-«/mo»«mn»2«/mn»«mo»=«/mo»«mn»18«/mn»«mspace linebreak=¨newline¨/»«mn»5«/mn»«mi»k«/mi»«mo»=«/mo»«mn»18«/mn»«mo»+«/mo»«mn»2«/mn»«mspace linebreak=¨newline¨/»«mn»5«/mn»«mi»k«/mi»«mo»=«/mo»«mn»20«/mn»«mspace linebreak=¨newline¨/»«mo»§#8658;«/mo»«mi»k«/mi»«mo»=«/mo»«mn»4«/mn»«mo».«/mo»«/math»" height="110" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -55px;" width="129" />

Jadi, nilai k adalah 4.

Diketahui fungsi f(x) = 5x - 2 dan fungsi f(k) = 18. Nilai k adalah ....

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Diketahui fungsi f(x) = 5x - 2 dan fungsi f(k) = 1...

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