Help me please!! Greta is a member of a very small and deliberately low-profile organization called shower vocalists of America. She paid $45 in dues for each of her first 5 years as a member and $20 in dues each year after that. If Greta has paid a total of $485 in dues, for how many years has she paid $20 in dues?

Please explain your answer if you could :]

The classrooms are trying to raise $1,200.00 for charity. mrs. leblanc's class has raised 50%. mr. patel's class has raised $235.14 ms. warner's class has raised 1/3 as much as mrs. leblanc's class. how much more money is needed to reach the goal of $1,200.00?

If the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.