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A student bought 1 Blu-Ray and 2 DVD movies for a total of $90, while a second student spent $171 to purchase 5 DVDs and 1 Blu-Ray. If B is the cost of a Blu-Ray in dollars and D is the cost of a DVD in dollars: a) Write two (2) equations that relate the number of Blu-Rays and DVDs to their cost. b)Solve the above equations simultaneously to find the cost of a Blu-Ray and the cost of a DVD. c) Check your solution.
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