To get the inverse of a quadratic to be a function you have to?

At least two people have the same birthday in a school of 150 students

Beth took out a $20,000 loan for college she is borrowing money from two banks. bank a charges an interest rate of 8.5% bank b charges and interest rate of 10.5% after one year alice owes $1860 in interest how much money did she borrow from bank a

How do you find principle and simple interest