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19 April, 09:27

College tuition at bedrock university has increased $500 per year for the past six years. Wilma is a freshman this year and paid $10,250 for her tuition. She is curious about her tuition in the coming years and needs this information as motivation to graduate in four years. Assuming the tuition rate increase remains constant, write an equation to represent the tuition at bedrock university in x years.

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  1. 19 April, 11:34
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    First you need to find the initial tuition, so multiply the increase by the years

    500 x 6 = 3,000

    Then subtract that from Wilma’s tuition

    10,250 - 3,000 = 7,250

    Use that and the rate of increase to create the equation

    Tuition = 7,250 - 500x

    Where x represents the number of years
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