A sequence can be represented by an= 3 + an-1. If a1 = 2, which expression could be used to represent the same sequence? A - 3 - n
B - -1 + 3n
C - -3 + 2n
D - -2 + 2n

A I got a 100 on this test too

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)