A coffee shop uses 4 liters of milk every day.

If there are 15 liters of milk in the refrigerator, after how many days will more milk need to be purchased?

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Combine like terms to make a simpler expression 3z+z