Equivalent Expressions with Perimeter & Percents

Front

What is an equivalent expression for a 25% discount on a $45 watch?

Back

The equivalent expression is: 45 - 0.25(45) = 0.75(45).

Front

How is a discount applied to a price?

Back

A discount is subtracted from the price.

Front

What is the formula for finding the perimeter of a rectangle?

Back

The formula for the perimeter of a rectangle is: 2l + 2w.

Front

How do you represent a 3.5% tax added to the price of a house, h?

Back

The expression is: H + 0.035H.

Front

What expression can be used to find the cost of a hat after a 20% discount?

Back

The expression is: x - 0.20x, which simplifies to 0.8x.

Front

What does the term 'percent' mean?

Back

Percent means 'per hundred' and is used to express a number as a fraction of 100.

Front

How do you calculate the total cost after applying a percentage increase?

Back

To calculate the total cost after a percentage increase, use the formula: original price + (percentage increase × original price).

Front

What is the relationship between discounts and sales tax?

Back

Discounts reduce the price of an item, while sales tax is added to the price after discounts are applied.

Front

If an item costs $100 and has a 15% discount, what is the final price?

Back

Final price = 100 - (0.15 × 100) = $85.

Front

What is the formula for calculating the area of a rectangle?

Back

The formula for the area of a rectangle is: A = l × w.