The number line shows the distance, in meters, of two jellyfish, A and B, from a predator located at point X: A horizontal number line extends from negative 3 to positive 3. The point A is at negative 1.5, the point 0 is labeled as X, and the point labeled B is at 0.5.

Part A: Write an expression using subtraction to find the distance between the two jellyfish.

Part B: Show your work and solve for the distance using additive inverses.