decoders

So I have the next Logic Function: F(A, B, C, D) =∑(1,2,4,7,8,10,13,14,15) And I need to implement a 4:1 MUX with some Logic Gates. And a 3:8 Decoders with some Logic Gates too. Can somebody please tell me what to do? Images are appreciated, I'm a visual learner.