Since the caterpillar crawled through the origin, her movement can be described by a straight line equation modeled with the points (-2.5; -5.5) and (0; 0).
We’ll start off knowing that 1kg equals 1000 grams. So what you do from here is you subtract 180 from 1000 because that’s what it weighed. Since it was two kg in total, you’re going to add together your result and that kilogram, equaling out to 1.820kg. I hope this helped!
