Answer: In 2005 the amount spend on internet ads = $74.6 billions.
In 2009 spending on internet search ads will reach $102 billion .
Step-by-step explanation:
Given : The number of internet paid search ads is increasing as advertisers move away from traditional marketing methods.
The equation [tex]y=6.9x+40.1[/tex] can be used to project spending on internet search ads, in billions of dollars, x years after 2000.
To estimate spending on internet ads in 2005.
We need to put x= 5 in the above equation [∵2005-2000=5]
[tex]y=6.9(5)+40.1[/tex]
[tex]y=34.5+40.1[/tex]
[tex]y=74.6[/tex]
i.e. In 2005 the amount spend on internet ads = $74.6 billions.
Put y= 102 in the given equation, we get
[tex]102=6.9x+40.1[/tex]
[tex]61.9=6.9x[/tex] [Subtract 40.1 from both sides]
[tex]x=\dfrac{61.9}{6.9}=\dfrac{619}{69}=8.97101449275\approx9[/tex]
And 2000+9=2009 [x is the number of years after 2000]
Hence, in 2009 spending on internet search ads will reach $102 billion .
