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Mathematics 17 Online
OpenStudy (anonymous):

Mary is a sales associate in a clothing store. Each week she earns $250 plus a commission equal to 3% of her sales. This week her goal is to earn no less than $460. Write an inequality to find the dollar amount of the sales she must have to reach her goal.

OpenStudy (anonymous):

460-250=210 She has to earn at least $210 from sales. As what she gets is 3% of what she sells, $210 is 3% of her sales, therefore $70 is 1%. This makes $7000 (which is 100 percent) the minimum amount of sales she has to make. Therefore, \[Her sales \ge $7000\]

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