Question

Write the following Arithmetic Sequence using a Recursive Formula: a = -7 + 3(n - 1)

A : A1 = -7, an = an-1 + 3
B : A1= -7, a, = an+1 + 3
C : A1 = 3, an = an+1 - 7
D : A1 = 3, an = an-1 - 7

NEED ANSWER ASAP

Answer 1

A : A1 = -7, an = an-1 + 3

Explanation:

a1=-7, a2=-7+(1)3=-4

a3=-7+(2)3=-1