What is the value of x in f(x)=x/3-1/6,when f(x)=0.5

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

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