The profits (in millions) of a company are recorded as follows: year 1990 1991 1992 1993 1994 1995 profit 8.8 12.6 15.4 17.2 Estimate a formula for the profit (P) function in terms of the number (x) of years after 1990. Find either a quadratic formula or a linear formula, depending on which fits the data best. (Enter the fraction in parenthesis.) f (x) = Done