Which graph shows a graph of a circle with equation x 2 + (y+3) 2 =9

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

True or false look at the picture pls : /

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.