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Question 789310: I am trying to help my step son out with his algebra problems. I normally do well in algebra, but for some reason I am having difficulty today. He is asked to identify the independent and dependent variables in the following. A small size bottle of water cost $1.99 and a large size bottle of water cost $3.49
I think the independent variable would be the size of the bottle and the dependent variable would be the amount of water the bottles hold and the price of the bottles. Please advise. Thank You!
Also, he is asked to solve and write as a function and in function notation???
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! A small size bottle of water cost $1.99 and a large size bottle of water cost $3.49
I think the independent variable would be the size of the bottle and the dependent variable would be the amount of water the bottles hold and the price of the bottles.
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It could be either way, but it's most likely that the amount of water is the independent variable --> cost is dependent.
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Also, he is asked to solve and write as a function and in function notation???
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A function related to the the water and cost? Without numbers for the sizes it's not possible.
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Assume small = 1 liter and large = 2 liters as an example
Assuming a linear relation between size (v) and cost (which it not realistic):
C(v) = 1.50v + 0.49 (C = cost in dollars, v = volume in liters)
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This is confusing because it's not a clearly stated problem.
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