The average price of a gallon of orange juice from october 2013 to september 2014 can be modeled by the function f shown, where x represents the number if months since october 2013,
f(x)=6.12+0.03x
complete the sentence to describe the change in average price of a gallon of orange juice from october 2013 to september 2014
the average price of a gallon of orange ( 1st-blank) by (2nd-blank) each month
1st -decreased or increased
2nd- 3% or 612% or $0.03 or $6.12