The surface area of the three dimensional figure is how many square centimeters?

What is the result of the following division?

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)

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.