1.3 12 Help with a through d please

The table gives the yearly sales, S, of a retail store in years Year, t Sales, S 2001 41.102 a) Find the change in sales from 2001 to 2006. 2002 38,580 b) Find and interpret the average rate of change in net sales from 2001 to 2006 2003 35,961 c) Were there any intervals when the average rate of 2004 31,969 change was 0? If so, when? 2005 29,215 d) Were there any one-year intervals when the average 2006 31,969 rate of change was positive? If so, when? a) The change in sales between 2001 to 2006 was dollars