Math (high school to graduate school)

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• 1. Quiz: Solve for $x$ in the following linear equation: $3x + 5 = 20$.
• 2. Quiz: What are the roots of the quadratic equation $x^2 - 7x + 12 = 0$?
• 3. Quiz: Evaluate the following definite integral: $$ \int_{0}^{\pi} \sin(x) \, dx $$
• 4. Quiz: What is the value of the contour integral evaluated counterclockwise around the unit circle $|z|=1$? $$ \oint_{|z|=1} \frac{1}{z} \, dz $$