What is the mean for the numbers 16 12 18 17 16 8 7 2

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

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?