1. Make sure to put brand new batteries before your exam! Calculus nightmare.

    Make sure to put brand new batteries before your exam! Calculus nightmare.

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  2. Trigonometric graphs 📈 📉 you’ll need to know these for your exam! #trig #algebra

    Trigonometric graphs 📈 📉 you’ll need to know these for your exam! #trig #algebra

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