The bar graph shows the percentage of college freshmen in a certain country with an average grade of Ain high school.The data displayed by the bar graph can be described by the mathematical model p =4x- + 25 where xis the number of years after 1980 and p is the percentage of college freshmen who had an average

The bar graph shows the percentage of college freshmen in a certain country with an average grade of Ain high schoolThe data displayed by the bar graph can be d class=