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19 February, 10:50

You borrowed 90 dollars from your grandmother. You pay back 15 dollars each week. Write in standard form an equation in which y is the amount of money owed after x weeks

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  1. 19 February, 11:01
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    Okay, so, if you owe 90 dollars, and you pay 15 every week, you need a variable for how many weeks. We're gonna use x. You need another variable to represent how much more money you owe after x weeks. We're using y for this one.

    If you're starting amount is 90, we're going to subtract a number from it. To find how many weeks you're paying, use the variable x. If it's 15 dollars a week, we use 15x

    90-15x = y
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