Question

Help !!

Answer 1

The recursive formula for an arithmetic sequence is an = an-1 + d. If the common difference is -15 and a6 = 7, what is the value of a7?

A. 22
B. -22
C. 8
D. -8

Answer 2

a(1) = a(0) - 15
a(2) = a(1) - 15
a(3) = a(2) - 15
a(4) = a(3) - 15
a(5) = a(4) - 15
a(6) = a(5) - 15
a(7) = a(6) - 15 if a(6) = 7 then a(7) = ______ ?? Is this the question?
a(8) = a(7) - 15