Y = Earnings per week
X = Sales per week
5% = 1/20
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Y = 500 + 1/20 X
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500 + 1/20 X > 700
1/20 X > 700 - 500
1/20 X > 200
20 1/20 X > 200 * 20
X > 4000
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Jasmine needs to make over $4,000 in sales each week to meet her target.