12. A pack of cinnamon-scented pencils sells for $4.00. What is the sales tax rate if the total cost of the pencils is $4.32?

13. How can you solve problems involving percents?

12) tax rate is 8%

13) convert percent to decimal format

Step-by-step explanation:

12) 4.32/4.00 = 1.08

1.08 - 1 = 0.08

0.08 * 100 = 8%

13) Convert all % to decimal format.

Do this by dividing the percent by 100

e. g. 10% = 10/100 = 0.10