How many solutions does this equation have and why?? -3(4-3x)=9x-12 please helpp!

The price of a particular stock is represented by the linear equation , where x represents the number of weeks the stock has been owned and y represents the price of the stock, in dollars. if this relationship continues, what is the price of the stock after it has been owned for 12 weeks? $92.55 $94.37 $100.52 $114.39

Can any one me with the answers to these questions asap?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2