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Jorge bought a mechanical pencil for $8. A lead and eraser refill pack costs $2. Write a linear function to describe the cost of using the pencil as a function to describe the cost of using the pencil as a function of the number of refill packs.

User GalahadXVI
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1 Answer

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x is number of refill packs
f(x) = 8 * 2x
User Rcnespoli
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