Question

what is the next term of the geometric sequence? -5, -10, -20, -40, ... a. -80 b. -5 c. -160 d. 2

Explanation:

Step1: Find common ratio $r$

$r = \frac{-10}{-5} = 2$

Step2: Multiply last term by $r$

$-40 \times 2 = -80$

Answer:

a. -80