Really need if you know it answer

Johnny rode his bike to a friends house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was unable to play. what was his displacement for the total bike ride trip? what could you use as a reference point ? show the steps to solve this problem.

Guys can y’all me because i don’t understand to the questions of my cousin she tell me to do the homework plz me guys

Number patterns 54, 18, 6, 2, 2/3, what are the next 2 terms?