# At the Greek Burger Joint, the soda fountain yesterday dispensed 150 sodas and used 750 ounces of syrup. What is the constant proportionality of this relationship? What is the unit rate of this relationship?

Looking at this as a ratio of sodas to ounces of syrup:

simplified:

For direct proportion we have:

We can check this. If we used 1500 ounces of syrup, we would expect this to make 300 sodas.

So this is correct.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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