The water level at Town Lake is dropping 8 inches per month. Is this Proportional or Non-proportional?

Which statement about perfect cubes is true

Lucy is a dress maker. she sews \dfrac47 7 4 of a dress in \dfrac34 4 3 hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)