6 4 2 3 1 July 8, 2019 16 32 64 128 6 4 3 2 1 5 (- 6 2 4 3 )(- 12 6 4 2 9 3 1 6 5 4 3 2 1 trend 6 5 4 3 2 1 formula 6 5 4 3 2 1 grocery method 4 6 2 3 x 1 5 6 5 4 3 2 1 song 7 6 4 3 2 1 8 6 4 3 2 1 6 3 4 2 1 3 as a fraction 6 4 5 2 1 3 as a fraction 2 6 * 4 3 13 6 2 3 4 10 6 4 x 3 )= 2 x 1