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# Linear Equations

Your music collection grows by 20 songs every week. If you currently have 1,000 songs, how many weeks will it take to amass 3,500 songs?

Let \(f(x)\) be a linear function. Given \(f(6)-f(2)=12\) find the value of \(f(12)-f(2)\).

Three identical small hoses can fill the swimming pool in 5 hours (working together).

Using two large hoses and one small hose, how much time will it take to fill the swimming pool? Give your answer in minutes.

If the battery of my fully charged phone was discharged in 8 hours, then how long did I have it on?

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