Question

If f(x) = 2x + 3, what is f(–2)?

Answer 1

Substitute -2 for x

$f( - 2) = 2( - 2) + 3 \\ y = - 4 + 3 \\ y = - 1$

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Answer 2

Answer:

-1

Step-by-step explanation:

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To find the value of f(-2), we need to stick in -2 for x.

$\mathsf{f(-2)=2\cdot(-2)+3}$. Multiply first.

$\mathrm{f(-2)=-4+3}$. Now simplify completely.

$\mathsf{f(-2)=-1}$. Which is our final answer.

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