What is this expression in simplified form?

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

Find the values of y: 3y^3(y^2+ 2/3y)=0

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park is the cost of admission proportional to the amount of people entering the amusement park? explain.