An electronic firm manufacturer three models of stereo receivers, two cassette decks , four speakers and three CD players. When the four types of components are sold together, they form a system . How many different systems can the electronic form offer?

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

Someone answer this asap for the first five terms of a sequence are shown. 5, 11, 23, 47, 95, . . which recursive function defines the nth term in the sequence for n > 1? a. f(n) = f(n - 1) + 6 b) f(n) = f(n - 1) + 48 c) f(n) = 3 • f(n - 1) + 1 d) f(n) = 3 • f(n - 1) - 4