The age that women in Virginia decide to get married for the first time is normally distributed with an average of 26.3 years and a standard deviation of 3.1 years. Find the probability that a randomly selected Virginian woman has her first marriage over the age of 30 years.

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.