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In 2018, there were 15,370 Dollar General Stores in the United States. This was an 87% increase over the number of Dollar General Stores in the United States in 2007. Find the number of Dollar General Stores in the United States in 2007 by writing and solving a linear equation. Round your answer to the nearest whole number.

Respuesta :

Answer:

The linear equation is:

[tex]15370-x=0.87x[/tex]

There were 8219 Dollar General Stores in 2007.

Step-by-step explanation:

Let the number of General Stores in 2007 be 'n'.

Given:

Number of Dollar General Stores in 2018 = 15,370

Stores in 2018 was an increase of 87% when compared with the number in 2007.

So, number of general stores in 2018 - number of general stores in 2007 + 87% of number of stores in 2007.

[tex]15370-x=87\%\ of\ x\\15370-x=0.87x\\x+0.87x=15370\\1.87x=15370\\x=\frac{15370}{1.87}\approx8219[/tex]

So, there were 8219 Dollar General Stores in 2007.

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