$150 necklace and a 6.5% sales tax:
First, the easiest way to figure this out is to convert the percentage (6.5) into a number that you can calculate with. Take your percentage and divide it over the number 100.
[tex] \frac{6.5}{100} = 0.06[/tex]
Now that we have a number that we can calculate with, our next step is to multiply our new number with the total amount that we have to spend on the necklace.
[tex]0.06 * 150.00 = 9.75[/tex]
Knowing that you are going to have to pay an extra $9.75 due to sales taxes, you can now add the tax up with the original price to get the total value you are going to have to pay.
[tex]150.00 + 9.75 = 159.75[/tex]
Answer: $159.75
