The function f(x)=0.39x+10.9 can be used to predict diamond production. For this​ function, x is the number of years after​ 2000, and​ f(x) is the value​ (in billions of​ dollars) of the​ year's diamond production. Use this function to predict diamond production in 2006 The diamond production in 2006 is predicted to be ​$[ ] nothing billion.