Math Question: Expand and factorize the expression (x + 3)(x - 5) - (4x - 2) using the distributive property.
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Question: ⅝ of the students in a class prefer chocolate, ¼ prefer vanilla, and the rest prefer strawberry. What percentage of students prefer strawberry?
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What is the dot product of u = (3, -4) and v = (5, 2)?