Let f: x --> y be a function. (a) prove the following: if a, b c x are sabseits, then f(aub) = f(a)us(b). (b) prove the following: if a, b c x are subsets then f(an b) s f(a)n f(b). (c) give an explicit example of a function : x y and subsets a, b c x which demonstrate that the equality f(anb) = f(a)n f(b) need not hold.

Ahiking trail is 6 miles long. it has 4 exercise stations, spaced evenly along the trail. what is the distance between each exercise station?

Which expressions are equivalent to k/2 choose 2 answers: a k-2 b 2/k c 1/2k d k/2 e k+k

The volume, v, of a rectangular prism is determined using the formula, where / is the length, w is the width, and his theheight of the prism. carltren solves for w and writes the equivalent equation w=using this formula, what is the width of a rectangular prism that has a volume of 138.24 cubic inches, a height of 9.6 inches,and a length of 3.2 inches?