Try another version of this question Box 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4) Box 2: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
The table below gives the annual sales (in millions of dollars) of a product.
year 1998 1999 2000 2001 2002 2003 2004 2005 2006 sales 161 215 257 287 305 311 305 287 257
What was the average rate of change of annual sales
a) Between 1999 and 2000
millions of dollars/year
b) Between 1999 and 2004
millions of dollars/year
Enter DNE for Does Not Exist, oo for Infinity `(257 - 215)/(2000-1999) = 42`
Enter DNE for Does Not Exist, oo for Infinity `(305 - 215)/(2004-1999) = 18`