Two factor of 30 that add up to 9

Plz hurry evaluate the expression a+b where a=8 and b=19

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?

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.