<u>Answer-</u>
<em>The cubic equation-</em>
<em>
</em>
<em>Milk consumption in 1994 was </em><em>58.4 pounds.</em>
<u>Solution-</u>
The general form of a cubic model is,

x = input variable = year - 2000 i.e number years after 2000
y = output variable = milk consumed in pounds
Then putting the values from the table,

--------------------------1

-------------2

-------------3

------------4
Solving equations (1), (2), (3) and (4) simultaneously we get,

So, the equation becomes,

In order to get the milk consumption in 1994, putting x=94



Therefore, milk consumption in 1994 was 58.4 pounds.