What is the total cost

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

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.

Find the rate of change for the situation.you run 7 miles in one hour and 21 miles in three hours.