Online jewelry sales have increased steadily over the last 10 years. in 2003, sales were approximately 2 billion dollars, and in 2008 they were approximately 146 billion () find the unit rate at which online jewelry sales have been increasing. (express your answer rounded correctly to the nearest hundredth of a billion per year) billion dollars per year () construct a model to predict online jewelery sales. according to your model, what should the online jewelery sales be in 2017? (express your answer rounded correctly to the nearest tenth of a billion ) billion dollars