Natalie’s girl scouts council organized a holiday cookie sale for the month of December. At the end of the month, all the money is donated to provide resources for locally impoverished families. Girl scouts plan to raise a minimum of $500,000 by Christmas Eve. On the first week they raised $48,000 in sales. On the second week of sales they raised $17,000 more than the first week. Write a linear equation that can be constructed to show the number of sales sold week one (x) to the increase of money raised per consecutive week (y).