Question

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

Answer 1

The average price of a gallon of orange increased by $0.03 each month.

Explanation:

It is 11 months between October 2013 and September 2014 so the price after 11 months =

f(11) = 6.12 + 0.03(11)

= 6.12 + 0.33

= $6.45.

This is an increase of 0.33 / 11 = 0.03 / month.