1A

\f\f\f\f\f\f\f\fParts of the Arithmetic Sequence Formula form position a =a +(#-1)d common difference First form Where: as = the term that you want to find a, = first term in the list of ordered numbers " = the term position (ex: for 5* term, n = 5 ) Source: https://www.chilimath.com/lessons/intermediate- algebra/arithmetic-sequence-formula/ the common difference between consecutive terms (d )A 12 by 12 Square Array Col01 Col02 Col03 Col04 Col05 Col06 Col07 Col08 Col09 Col10 Coll1 Col12 Row1 H 4 5 6 8 9 10 11 12 Row2 2 4 8 10 12 14 16 18 20 22 24 Row3 3 9 12 15 18 21 24 27 30 33 36 Row4 4 CO 12 16 20 24 28 32 36 40 44 48 Row5 5 10 15 20 25 30 35 40 45 50 55 60 Row6 6 12 18 24 30 36 42 48 54 60 66 72 Row7 7 14 21 28 35 42 49 56 63 70 77 84 Row8 16 24 32 40 48 56 64 72 80 88 96 Row9 9 18 27 36 45 54 63 72 81 90 99 108 Row10 10 20 30 40 50 60 70 80 90 100 110 120 Row11 11 22 33 44 55 66 77 88 99 110 121 132 Row12 12 24 36 48 60 72 84 96 108 120 132 144