Number of Certified Organic Farms in the U.S., 2001-2008

Year Spending

2001 5338

2002 5728

2003 6407

2004 6377

2005 6874

2006 7789

2007 9517

2008 11257

(a)Fit three trends (linear, quadratic, exponential) to the time series.(A negative value should be indicated by a minus sign.Do not round the intermediate calculations.Round your finalanswers to 2 decimal places.)

Lineary_t=x_t+

Quadraticy_t=x_t²+x_t+

Exponentialy_t=e^x

(b)Use each of the three fitted trend equations to make numerical forecasts for the next three years.(Round the intermediate calculations to 2 decimal places and round your finalanswers to 1 decimal place.)

Linear Exponential Quadratic

t

9

10

11