Online jewelry sales have increased steadily. in 2003, sales were approximately 2 billion dollars, and in 2013 they were approximately 5.5 1 billion. construct a model to predict online jewelery sales. use your model, to find the predicted online jewelry sales for 2015? (express your answer rounded correctly to the nearest tenth of a billion.)

1)

2) 6.4 billion.

Step-by-step explanation:

1) Let the model that is used to find online jewelry sales ( in billions ) after x years,

Let 2003 is the initial year,

That is, for 2003, x = 0,

The sales on 2003 is 2 billion, y = 2,

⇒

Now, in 2013 they were approximately 5.5 1 billion

i.e. if x = 13 then y = 5.51,

With help of graphing calculator,

r = 0.081,

Hence, the model that represents the given scenario is,

2) For 2015, x = 15,

Hence, online jewelry sales for 2015 would be,

the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation: