The number of vinyl album sales​ (in millions) in a country x years after 2010 can be modeled by y=0.12x2+0.3x+3.3 for 2010 through 2016. Use this model to predict the number of vinyl album sales in the country in the year 2020 where (x=10).

Answer 1

so plug in x=10 and evaluate y.
what do you get?

Answer 2

(x=10)
so, y=0.12x^2 or 0.12 x 10=1.2 squared or 1.2 x 1.2=1.44
0.3 x 10= 3
plus 3.3 or

1.44+3+3.3=7.74

Answer 3

20.5 million