Posted by **Anonymous** on Monday, January 10, 2011 at 12:54am.

Write Home Depot’s 2002 sales and 2006 sales in scientific notation.

2002: (5.82×10^10)

2006: (9.08×10^10)

This part I got. but can someone help me with the second part...

1) Find the increase in sales from 2002 to 2006.

I think the answer is:

(9.08×〖10〗^10 )-(5.82×〖10〗^10 )=3.26×〖10〗^10

If so then answer this:

2)What was the percent growth in Home Depot’s sales from 2002 to 2006? Do all your work by using scientific notation.

- algebra -
**Dr Russ**, Monday, January 10, 2011 at 1:01am
So the precentage increase is

3.26×10^10 x 1 x 10^2/(5.82×10^10)

- algebra -
**Anonymous**, Monday, January 10, 2011 at 1:06am
Can you answer where that came from?

- algebra -
**Dr Russ**, Monday, January 10, 2011 at 1:11am
percentage increase is

increase x 100/starting amount.

I have put 100 as 1x10^2 as you have been asked to work in scientific notation.

- algebra -
**Anonymous**, Monday, January 10, 2011 at 1:41am
Thanks for the help.

Are you sure though that it is not the change in value divided by the current value?

Using what you told me i got a 56% change in value. And 9.08x10^10 is clearly not more than 50% of the original value of 5.26x10^10. Otherwise the new value would have to be over 10.52x10^10.

- algebra -
**Reiny**, Monday, January 10, 2011 at 10:47am
I agree with Dr Russ

the percentage increase

= (9.08 x10^10 - 5.82 x 10^10 )/(5.82 x 10^10)

= .5601

or 56% increase

check:

156% of 5.82 x 10^10

= 1.56(5.82 x 10^10

= 9.08 x 10^10

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