Answer:
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Step-by-step explanation:
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She had none left. if she only had a meter and then used a meter there would be none left.
For this case we have a direct variation of the form:

Where,
- <em>k: proportionality constant
</em>
We must find the value of k.
For this, we use the following data:

Therefore, replacing values we have:

Rewriting:

Clearing the value of k we have:

Therefore, the direct variation equation is given by:

Answer:
The quadratic variation equation for the relatonship is:

Answer:
5
Step-by-step explanation: