## Sales Tax

## Work Time

# Sales Tax

Lucy bought a blouse with a price of $20. The sales tax was 5%. What is the total amount she paid for the blouse?

- Write an equation to find the total amount Lucy paid for the blouse.
- Solve the equation.
- If every item in the store has a sales tax of 5%, is there a proportional relationship between the price of an item and the total amount paid for it?
- How does the number you used in your equation relate to the constant of proportionality?
- Make a graph that shows the relationship between the price of any item in the store and the total amount paid.

## Hint:

- What is the price of one blouse?
- What amount do you need to multiply the price by to get the total amount that Lucy paid for the blouse?