Abuilder is trying to level out some ground with a front-end loader. he picks up some excess dirt at (7, 18) and then maneuvers through the job site along the vectors angleleft −3, 0 angleright, angleleft 7, 3 angleright, angleleft 3, 10 angleright to get to the spot to unload the dirt. find the coordinates of the unloading point. find a single vector from the loading point to the unloading point.