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19-01-2021
Mathematics

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If f(3) = 12, which of the following could be a solution for the equation f(x).

If f3 12 which of the following could be a solution for the equation fx class=

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SilverKey SilverKey

19-01-2021

Answer

f(x) = 3x+3

Explanation

So basically your replacing x with 3 to see which one would turn out to be 12.

3(3) = 9

2(3)+12 = 18

3(3)+3 = 12

(3)+10 = 13

Only the third one becomes 12 when you replace x with 3, so the answer is number 3.

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