Mr. x went shopping with a certain amount of money. he spent dollar 10.25 on buying pen and dollar 25.75 in food. he then gave the remaining dollar 16.50 to his friend. calculate how much money he initially had?

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.