Sales Tax and Price Calculations

This video tutorial from Moomoomath explains how to calculate the final price of an item after adding sales tax. It covers three problems: calculating the final price of a $45 item with a 7% sales tax, a $25 item with a 3% sales tax, and determining the original price of an item given the final price and a 3% sales tax. The video demonstrates the use of formulas and basic arithmetic operations to solve these problems.

What is the sales tax percentage applied to the $45 item in the first problem?

• 12%

• 10%

• 7%

• 5%

How do you convert a percentage to a decimal for calculation purposes?

• Move the decimal one place to the right

• Move the decimal one place to the left

• Move the decimal two places to the right

• Move the decimal two places to the left

What is the final price of a $45 item with a 7% sales tax?

• $48.15

• $47.85

• $49.00

• $48.45

What is the sales tax percentage applied to the $25 item in the second problem?

• 5%

• 4%

• 3%

• 2%

What is the final price of a $25 item with a 3% sales tax?

• $26.00

• $25.75

• $26.25

• $25.50

In the reverse calculation, what is the final price given for the item?

• $25.00

• $24.75

• $25.75

• $26.00

What is the formula used to find the original price from the final price and sales tax?

• Original Price = Final Price / (1 + Sales Tax Rate)

• Original Price = Final Price - Sales Tax

• Final Price = Original Price * Sales Tax Rate

• Final Price = Original Price + Sales Tax

What is the original price of an item if the final price is $25.75 with a 3% sales tax?

• $24.75

• $25.50

• $25.00

• $25.25

How do you combine like terms in the equation 1.03x = 25.75?

• Add them

• Subtract them

• Multiply them

• Divide them

What operation is used to isolate x in the equation 1.03x = 25.75?

• Subtraction

• Division

• Multiplication

• Addition