Problema Solution
3. In 2002, Home Depot’s sales amounted to $58,200,000,000. In 2006, its sales were $90,800,000,000.
a. Write Home Depot’s 2002 sales and 2006 sales in scientific notation.
You can find the percent of growth in Home Depot’s sales from 2002 to 2006 by following these steps:
• Find the increase in sales from 2002 to 2006.
• Find what percent that increase is of the 2002 sales.
b. What was the percent growth in Home Depot’s sales from 2002 to 2006? Do all your work by using scientific notation.
4. A customer wants to make a teepee in his backyard for his children. He plans to use lengths of PVC plumbing pipe for the supports on the teepee, and he wants the teepee to be 12 feet across and 8 feet tall (see figure). How long should the pieces of PVC plumbing pipe be?
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3. Solution:
(a) $58,200,000,000 = 5.82*10^10
$90,800,000,000 = 9.08*10^10
the increase in sales from 2002 to 2006 is ( 9.08*10^10 - 5.82*10^10 = $3.26*10^10
the increase in 2002 sales = 3.26*10^10/5.82*10^10 = 56.0%
(b)the percent growth in Home Depotâs sales from 2002 to 2006 = 3.26*10^10/5.82*10^10 = 56.0%
4.Solution:
The length of PVC plumbing pipe = X
So in the right triangle, X^2 = (12/2)^2 + 8^2
X^2 = 100, X =10
So the length of PVC plumbing pipe = 10 fts.