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MATH / You have linear functions p(x) and q(x). You know p(2)=3, and p(q(x))=4x+7 for all x. Find q(−1).

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problem

You have linear functions p(x)p(x) and q(x)q(x). You know p(2)=3p(2)=3, and p(q(x))=4x+7p(q(x))=4x+7 for all xx. Find q(−1)q(-1).
Plain-text mathematical notation (without MathML)
You have linear functions p(x) and q(x). You know p(2)=3, and p(q(x))=4x+7 for all x. Find q(−1).
Original LaTeX notation
You have linear functions $p(x)$ and $q(x)$. You know $p(2)=3$, and $p(q(x))=4x+7$ for all $x$. Find $q(-1)$.

level

Level 5

type

Algebra

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