If f(x) = -3x - 2 find f(-2) + 9

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Johannes Wentu asked Apr 21, 2022

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If f(x) = -3x - 2
find f(-2) + 9

Mathematics
middle-school

Johannes Wentu asked Apr 21, 2022

by Johannes Wentu

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17 votes

It shluld be 19 i think

Craft answered Apr 23, 2022

by Craft

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11 votes

Answer:

f(-2) + 9 is 19

Explanation:

f(x) = - 3x - 2

when x is -9:

$f( - 2) = - 3( - 2) - 2 \\ f( - 2) = 10$

sum up with 9, f(-2)+9:

$f( - 2) + 9 = 10 + 9 \\ = 19$

Daniel Mahler answered Apr 28, 2022

by Daniel Mahler

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