Average annual premiums for employer-sponsored family health insurance policies more than doubled over 11 years. The bar graph shows the average cost of a family health insurance plan in the United States for six selected years from 2000 through 2011. Average Cost $18,000 $15,000 $12,000 $9000 $6000 $3000 $6438 Average Cost of a Family Health Insurance Plan $8003 39950 $11,480 Source: Kaiser Family Foundation $12.680 $15.073 2000 2002 2004 2006 2008 2011 Year 2500 The data can be modelled by f(x) = (840+) x + 6438 and g(x) = 6480 + 3 years after 2000. In which year do the two models have the same prediction? -6x.x