Arollercoaster has a 385 foot drop. if you descend at a rate of 40 feet per second, how long will it take you to reach to bottom?

Which is the completely factored from of xy^3-x^3y

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

Which equation represents the model shown? a)1/3 divide 1/6 = 2 b)2/3 divide 1/6 = 2/18 c)1/3 divide 1/6 = 1/18 d)2/3 divide 1/6 =4