In 2012 the two American telecommunication companies with the greatest revenues were AT&T and Verizon the two companies combined revenues of 242.2 billion AT&T’s revenue was 10.6 billion more than that of Verizon what was the revenue for each company

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )