Nicole went shopping for a new phone. Sales tax where she lives is 7%. The price of the phone is $21. Find the total price including tax. Round to the nearest cent.

Umm.. just started this 2day and its not on my notes(p′︵‵。)

You can model the population of a certain city between 1955-2000 by the radical function p(x)=55,000 sqrt x-1945. using this model, in which year was the population of that city 220,000

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*