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Osvaldo Dean
Mathematics
15 January, 13:57
Evaluate 3x + 9 when x=4
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Terrance Gonzales
15 January, 13:59
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So you can use substitution for this problem which is plugging in the 4 for x:
3 (4) + 9
then you know that you can simplify it even more to
12+9
that can be simplified even more to
21
which is in simpliest form
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Rory Garcia
15 January, 14:05
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3x+9 is or equals to 21
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