To be able to do the problem 5(10 + 4) mentally, Zack does 50 + 20 instead of 5(14).
Zack is using which of the following properties?
associative
commutative
inverse
distributive

Imagine a new pasture with grass growing on it. every day after the seeds have germinated, the number of blades of grass in the pasture triples. after 18 days, the entire pasture is completely covered in grass. how many days did it take for the pasture to be one-third covered in grass?

Which expression is equivalent to? assume x > 0 and y > 0.

Which expression is equivalent to 2x^2+7x+4?