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2 years ago

15

Tim needs 18 pens. He can buy them in packages of 6, 9, 12.he will buy only one type of package. Which packages could tim buy. W

rite two different ways that to. Could buy exactly 18 pens

1 answer:

Mariulka [41]2 years ago

5 0

Two packages of 9.
• 9+9=18

OR

One package of 12 and one package of 6.
•12+6=18

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Now, we use the point (2, 108/25) to calcualte b:

$\begin{gathered} y=3\cdot b^x \\ \frac{108}{25}=3\cdot b^2 \\ 3\cdot b^2=\frac{108}{25} \\ b^2=\frac{108}{25\cdot3}=\frac{108}{3}\cdot\frac{1}{25}=\frac{36}{25} \\ b=\sqrt[]{\frac{36}{25}} \\ b=\frac{\sqrt[]{36}}{\sqrt[]{25}} \\ b=\frac{6}{5} \end{gathered}$

Then, we can write the equation as:

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