What is the nature of the roots of the quadratic equation if the value of its
discriminant is zero?

What are the domain and range of f(x)=[1/5]x

Which polynomial function has x intercepts -1, 0, and 2 and passes through the point (1, -6)

A) if $50000 is invested in a bank account that pays 9.3% of interest compounded on a six-monthly basis, how much money will be in the account after 3 and 12 years? b) if matusalen's father had put $2.0 in the bank when he was born and there, how long would matusalen have had to his death (969 years later) if the interest was 7% per year composed each month and weekly?