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OpenStudy (anonymous):
Heather is a software saleswoman. Let y represent her total pay (in dollars). Let x represent the number of copies of History is Fun she sells. Suppose that x and y are related by the equation 90x+2100=y Answer the questions below. Note that a change can be an increase or a decrease. For an increase, use a positive number. For a decrease, use a negative number.
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OpenStudy (anonymous):
what is the change in Heather's total pay for each copy of History is Fun she sells?
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