Arecent census listed the population of a city as 831,982.marisol rounds the population to 83000 and lindy rounds the population to 8.who rounded the population of the city correctly

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =