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josh has to graph a set of parabolas of the form y=x^2 -4x+2^n where n is an integer and 0≤n≤6 what is the probability that one of these parabolas, chosen at random, will have : a)one x intercept b)two x intercepts c)no x intercept

How many different types of pizza can you make with the following toppings: pepperoni, tomatoes, bacon, onions, and green peppers. Be prepared to explain your answer.