Percent Expressions

A shoe store is throwing a sale for 25% off all shoes. Which of the following expressions DOES NOT represent the sale price of the shoes?

• x - 0.25

• x(1 - 0.25)

• 0.75x

• x - 0.25x

A store charges a 8% sales tax on all purchases. Which of the following represents the cost of a purchase after tax?

• 0.8x

• 0.08x

• x + 0.8x

• x + 0.08x

Home Depot is having a 15% off sale on all lawn mowers. Choose ALL of the following that represent the sales price of a lawn mower.

• x - 0.15

• x(1 - 0.15)

• 1.15x

• 0.85x

• x - 0.15x

A chip company marks up their chip bags by 60%. Choose ALL of the following that represent the total cost of a bag of chips.

• x + 60x

• 1.60x

• 0.40x

• x + 0.60x

• x(1 + 60x)

When dining out at a restaurant, an average tip left by the customers is 15% of the cost of their meal. Which of the following DOES NOT represent the final cost of the meal after the tip?

• 1 + 0.15x

• 1.15x

• x(1 + 0.15)

• x + 0.15x

An item goes on clearance and is marked down 70% off its original price. Choose ALL of the following that represent the sale price of the item.

• 1 - 0.70x

• 1.7x

• 0.30x

• x - 0.30x

• x(1 - 0.70)