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How to know how to do this

How to know how to do this-example-1
User Jolene
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1 Answer

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The maximum capacity's 450, so it has to be less than or equal to 450. If there were already 130 people there, it has to be +130 already. Then, there's 35n.
So, writing the equation out, it's 35n + 130
\leq 450
User Naveen Agarwal
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