The opening value of a stock index on the first day of trading from 1994 to 2010 , can be modeled using the following polynomial: N(t)=11.9t3+20.3t2+22t+757, where t is time in years since 1994. A) Graph this function in an appropriate window for years 1994-2010, label completely. B) What is the vertical intercept (y-intercept), and what does this tell you in practical terms? C) Based on this model, what was the opening value stock index on the first day of trading in 2004 ? (15,108 is the actual number for that year)