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19. A video store sells DVD movies and video games. Suppose 68 movies are sold at $25 each and 43 video games are sold a

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19. A video store sells DVD movies and video games. Suppose 68 movies are sold at $25 each and 43 video games are sold a $54 each. a. Determine a representation of the sales vector, 3'. (1 mark) b. Determine a representation for the price vector, 3. (1 mark) 0. Find 3' o f)'. (1 mark) d. Interpret the meaning of 3" o 13' in this problem. (1 mark)

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