12/5 (7B) -Equations, Tax, Percent and other stuff

Front

What is the formula to calculate a percentage of a number?

Back

To find a percentage of a number, multiply the number by the percentage (in decimal form). Formula: Percentage of a number = Number × (Percentage / 100).

Front

What is 13% of 78?

Back

10.14

Front

How do you calculate a discount on an item?

Back

To calculate a discount, multiply the original price by the discount percentage (in decimal form) and subtract that amount from the original price.

Front

Andy bought an $85.00 jacket at 40% off. How much was his discount?

Back

$34.00

Front

What is the equation to find the sales tax amount?

Back

Sales Tax Amount = Price × Sales Tax Rate.

Front

Sales tax is __________ to the price.

Back

added

Front

What does it mean to simplify an equation?

Back

Simplifying an equation means to reduce it to its simplest form by combining like terms and eliminating unnecessary elements.

Front

Simplify and solve the equation: 2(3x - 1) = 4(x + 2). What is the value of x?

Back

x = 5.

Front

What is the cross-multiplication method used for?

Back

Cross-multiplication is used to solve proportions by multiplying the numerator of one fraction by the denominator of the other.

Front

Back

h = 51.