What is the missing constant term in the perfect square that starts with x 2 - 4 x

What are the domain and range of the function? f(x) = -4 (sqrt)x

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

Jordan got 27 out of 90 correct on his test . what fraction of the marks did her get correct