What is the equation of a line with a slope of 1/2 and a point (3, 1) on the line?
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Sales of statin on January 1, 2007 was 16.6 billion dollars.
Statin sales reached 20 billion dollars in the year 2009
Explanation :
The equation: S= 1.3x + 4.9 estimates the amount of sales, S, of statin (in billions of dollars) x years after January 1, 1998.
In 1998, the value of x=0
We need to find the sales in 2007.
2007 - 1998= 9 years
x=9 for the year 2007.
Substitute x=9 in the given equation S to find out sales
Sales of statin on January 1, 2007 was 16.6 billion dollars.
Now we find out the year when sales reached 20 billion dollars
S is the amount of sales in billion dollars .
Substitute 20 for S and solve for x
So , 11 years.
To find out the year , we add 11 with 1998
1998+11=2009
Statin sales reached 20 billion dollars in the year 2009
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