Show all work as you solve the linear modeling problem below. 9) Apple sold about 53 million iPods in 2008, but as iPhones became more popular, the sales of iPods began to decrease. The number of iPods sold in 2012 was about 33 million. Write a linear equation in slope-intercept form to model this decrease in sales. Let x stand for the number of years after 2008 and let y stand for the number of iPods sold, in millions. Simplify. These problems should all end with positive exponents 4yx5 2x3 y4 4 a12 a3 b 4 4 b2 (-x3 y-1)3 (2x3 y-2)3 x5 y3