13 The graph below shows the number of people who visited doctors because of influenza-like illnesses over a two-year period.
2007-2008
2008-2009
Week of the year
What can
you
conclude from this graph?
F Influenza-like illnesses follow a steady pattern throughout the year.
G Scientists can predict that the number of influenza-like illnesses will decrease
for 2009-2010
H The severity of influenza-like symptoms decreased in 2008-2009.
I The number of people who developed influenza-like illnesses did not peak at
the same time in 2008-2009 as it did in 2007-2008.