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Problem and Variable

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Problem and Variable

By: Libby NorthamMrs.Klar-7

9-20-10

- Margret and Monica went to the store to buy brownies. The brownies cost $10 each package, they bought 2 packages.

X = Number of packages

Y = The total cost

Y=10x or f(x)=10x

- Independent- number of packages
- Dependent- the total cost
We know that Y depends on X.

So the total cost depends on the number of packages.

- The data is a function because no “X” values repeat.

- Domain- all the “X” values in the data
- Range- all the “Y” values in the data
D:{1,2,3,4,5}

R:{10,20,30,40,50}

- The data is continuous because it is not a line it is points.

The total cost

- The total cost is depending on the number of packages that Margret and Monica buy $10 a pack. If the buy 2 packages than the spend $20.

Thank you for watching!