There was some ducks in the pond. twenty eight ducks flew away. seven more arrived at the pond. now there are 43 ducks in the pond. how many ducks were in the pond to start?

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 =