How do you do this? Asking for a friend because he doesn't have an account:

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

An account with a $250 balance accrues 2% annually. if no deposits or withdrawals are made, which graph can be used to determine approximately how many years will it take for the balance to be $282? it's e2020 ni️️as

What is the output, or dependent variable of quantity? 1: x 2: f(x) 3: y