How to i solve this Equation? What formula do I need to solve this equation?

9x^3 + 6x^2

The cash price of a television is $580.the hire-purchase price of the television is $865.the hire-purchase price is an initial deposit of n% of the cash price and 6 equal monthly payments of $120.find the value of n.

Wich statement could be used to explain why the function h(x)= x^3 has an inverse relation that is also a function

Jenny earned a 77 on her most recent test jenny score is no less then 5 points greater then 4/5 of terrance’s score if t represents terrance score which inequality represents the situation