The percentage of a country s population 25 years and older with at least a high school diploma is shown in the table for selected years Let x 0 represent 1950 x 10 represent 1960 and so on a Use the data for 1950 and 2000 to find a linear function f that models the data b Use the function from part a to approximate the percentage of the country s population 25 years and older who were at least high school graduates in 1995 High School Graduates Year 1950 1960 1970 1980 1990 2000 2005 Percent 34 5 40 7 52 8 66 1 77 1 87 5 88 3