Lima beans come in 3-pound bags and 5-pound bags which cost $1.15 and $1.63 respectively. how many of each should you buy to have at least 17 pounds of lima beans at the lowest cost. Justify your answer.

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).

Find the solution of each of the following.

What is always true when two whole numbers are subtracted?