A 8-foot tall stop sign creates a shadow that is 2.5 feet long. At the same time, a utility pole creates a shadow that is 10 feet long. How tall, in feet, is the utility pole?

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.