You by six notebooks and a backpack. The cost of the backpack is $17.90. You pay 6 dollars in sales tax. Your total bill is $30.74. How much does each notebook cost?

To find the answer, we first must write an equation.

($17.90 + (X Notebooks)) + 6% Sales Tax = $30.74

Now, we solve the equation for X.

First, we have to find the total before the sales tax. To do this, we divide the total by 1.06

$30.74/1.06 = $29

Now, we subtract the cost of the backpack and solve for X

$17.90+X=$29

X=11.10

Given that X is the total of 6 Notebooks, we divide $11.10 by 6 to find the price for each Notebook.

$11.10/6=$1.75 per notebook

It costs $1.85 for each notebook before sales tax and $1.96 after sales tax.