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?

d. The number of newspapers that Colby sold

the graph on the bottom right

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.