Moving Average Solution
MA3(5) = (1/5)(Y1+ Y2+ Y3+ Y4+ Y5)
MA4(5) = (1/5)(Y2+ Y3+ Y4+ Y5+ Y6)
MA5(5) = (1/5)(Y3+ Y4+ Y5+ Y6+ Y7)
MA6(5) = (1/5)(Y4+ Y5+ Y6+ Y7+ Y8)
MA7(5) = (1/5)(Y5+ Y6+ Y7+ Y8+ Y9)
MA8(5) = (1/5)(Y6+ Y7+ Y8+ Y9+ Y10)
MA9(5) = (1/5)(Y7+ Y8+ Y9+ Y10+ Y11)