Question 1100990
Change the description to ... and bought A PEN, a notebook, ...


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The pens were $2 less than the notebook and the tote bag was $7 more than three times the cost of the notebook. If Katie spends $30 before tax.
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Let n be price of a notebook.

<pre>
Item           PRICE
PENS            n-2
TOTE BAG        3n+7
NOTEBOOK        n
</pre>

Just one equation in one unknown is needed.
Katie spent $30.
1 pencil
1 notebook
1 tote bag
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{{{(n-2)+(3n+7)+n=30}}}


{{{5n-2+7=30}}}
{{{5n+5=30}}}
{{{n+1=6}}}
{{{highlight(n=5)}}}------price for one notebook.


Use that to find the other two prices.