Use the Formula for the General Term of a Geometric $$\mathbf { a } _ { 1 }$$

Use the Formula for the General Term of a Geometric SequenceUse the formula for the general term (the nth term) of a geometric sequence to find the indicated term of the
sequence with the given first term, $$\mathbf { a } _ { 1 }$$ , and common ratio, r.
-Find $a _ { 10 }$ when $a _ { 1 } = - 5 , r = - 2$ .

A) 2560
B) $- 5120$
C) 2564
D) $- 23$