Question

In the year 2010, there were 200 million landline customers and 86 million cell phone customers. In 2011, there were 196 million landline customers and 106 million cell phone customers. A) Find a linear equation that models the number of land line customers, y (in millions) x, years from 2010. B) Find a linear equation that models the number of cell phone customers, y (in millions), x years after 2010. C) determine the year in which the number of land line and cell customers will be the same.