Am i pretty???i dont think i am Write and evaluate the expression. Then, complete the statements.

First, write the expression
.

Second,
8 in for the variable, a.

Third,
by using
.

The answer is
.

step-by-step explanation:

i have done this all on a piece of paper but idk how to put it on here cuz it needs to be drawn

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

answer: plz put a pic in so i can answer it

step-by-step explanation: