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8 March, 01:51

The table below models the cost, y, of using a high-efficiency washing machine and a standard washing machine over x number of years. Which equation represents the cost of the high-efficiency washing machine over a given number of years? Which equation represents the cost of the standard washing machine over a given number of years? After how many years of use would the washing machines cost the same amount? Which washing machine would be the more practical purchase if kept for 9 years?

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  1. 8 March, 03:58
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    1. Which equation represents the cost of the high-efficiency washing machine over a given number of years? y=25x+500

    2. Which equation represents the cost of the standard washing machine over a given number of years? y = 30x + 400X

    3. After how many years of use would the washing machines cost the same amount? 20

    4. Which washing machine would be the more practical purchase if kept for 9 years? standard machine
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