Colby and Sarah sold newspapers this past summer. Colby earned $4.50 for each newspaper he sold. Sarah's earnings were $35 less
than Colby's at the end of the summer. The following expression shows Sarah's earnings: 4.50y − 35
In the expression, what does the variable y represent?
Sarah's earnings at the end of the summer
Colby's earnings at the end of the summer
The number of newspapers that Sarah sold
The number of newspapers that Colby sold
D. <span>Colby and Sarah sold newspapers this past summer. Colby earned $4.50 for each newspaper he sold. Sarah's earnings were $35 less than Colby's at the end of the summer. The following expression shows Sarah's earnings:
4.50y − 35</span>
members from the group of 
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ways to do it.
