How can i write repeated multiplication using powers

Abag of popcorn contains 483 calories and servers 3.5 people. how many calories are in each serving.

Find the balance at the end of 4 years if 1000 is deposited at the rate of

The marriott family bought a new apartment three years ago for $65,000. the apartment is now worth $86,515. assuming a steady rate of growth, what was the yearly rate of appreciation? what is the percent of the yearly rate of appreciation?