Respuesta :

Answer:

Investment problems usually involve simple annual interest (as opposed to compounded interest), using the interest formula I = Prt, where I stands for the interest on the original investment, P stands for the amount of the original investment (called the "principal"), r is the interest rate (expressed in decimal form), and t is the time.

Step-by-step explanation: -hope this helps

Answer: equation is

interest= interest rate x principal  

Key: interest is the amount that is unknown

interest rate is the percent

Principal is the original amount started with.

Step-by-step explanation: