Question: 3. Jack and Jill work at the same store. Jack's total weekly salary, in dollars, if he sells x items is given by .S' =

3. Jack and Jill work at the same store. Jack's total weekly salary, in dollars, if he sells x items is given by .S' = IUD + 5x, and Jill's total weekly salary, in dollars, if she sells x items is given by 3' = 30 4- x. Assuming that they sell the same number of items in a week, what is the minimum number of items they have to sell so that Jill's weekly salary is at least $100 more than Jack's? \"Va/VI
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