# I go to the store to buy school supplies. I spend $8.52. I buy one notebook $2.55 and three pens which are each the same price. What is the price of a pen?

The price of the pen is $1.99

Notebook = x Pen = y

Formula

Cost = x + 3y

if you know that the total cost is $8.52 and that the notebook cost$2.55, you can solve the question like so:

$1.99 = y

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The price of one pen is

Let's list out what we know:

I hope this is useful.

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The price of a pen is $1.99.

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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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