Math question: Convert the number 3.2 x 10^5 to standard notation.
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A clothing store sells shirts in two colors, red and blue. Out of 100 customers, if the probability of a customer buying a red shirt is 0.3, find the expected number of customers buying red shirts.
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What is the equation of an ellipse with center (3, -2), major axis length 8, and minor axis length 6?