Question

Pliz help me on this one need help pliz

Answer 1

You could make an equation using the arithmetic sequence. Which is, a(n)=a(1)+(n-1)(d)

Plug in the given information.

a(n)=1+(n-1)(-1/3)

with our constructed equation, we could now find any term.

a(9)=1+(9-1)(-1/3)

a(9)=-5/3