Front

What is the formula for the circumference of a circle?

Back

Circumference = 2πr, where r is the radius.

Front

What is compound interest?

Back

Interest calculated on the initial principal and also on the accumulated interest from previous periods.

Front

How do you calculate sales tax?

Back

Sales tax = Price × Sales tax rate.

Front

What is the formula to calculate the new price after applying a discount?

Back

New Price = Original Price - (Original Price × Discount Rate).

Front

What is surface area?

Back

The total area of the surface of a three-dimensional object.

Front

What is the formula for the surface area of a rectangular prism?

Back

Surface Area = 2(lw + lh + wh), where l = length, w = width, h = height.

Front

What is the formula for calculating the balance in a compound interest account?

Back

Balance = P(1 + r/n)^(nt), where P = principal, r = annual interest rate, n = number of times interest applied per time period, t = number of time periods.

Front

What does it mean to compound interest annually?

Back

Interest is calculated once a year on the principal and any previously earned interest.

Front

What is a percentage?

Back

A fraction expressed as a part of 100.

Front

How do you convert a percentage to a decimal?

Back

Divide the percentage by 100.