$How long does it take an account with a principal of $400 to earn $60 in interest at a simple annual interest rate of 3%

Y+ 2/y is it a polynomial in one variable or not? and if so, why?

In one month jillian made 36 local phone calls and 20 long-distance calls what was her ratio of local calls to long-distance calls for that month?

How do i answer this i do not get this at