Help quick
i don’t understand!! help me please!

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost

Asequence is a function whose is the set of natural numbers

Aconstruction worker needs to put a rectangular window in the side of a building he knows from measuring that the top and bottom of the window have a width of 8bfeet and the sides have a length of 15 feet he also measured one diagonal to be 17 feet what is the length of the other diagonal