2005 2006 2007 2008
plant 1 20 4 25 10
plant 2 25 5 5 48
plant 3 20 8 20 32
plant 4 43 10 10 47
plant 5 40 11 15 48

during which year were the mean and median the same value?
a) 2005
b) 2006
c) 2007
d) 2008

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.