Generate the next three terms of each geometric sequence defined below. (in picture)

Answer:
a) -9, -10, -11
b)24, 36, 54
c)-10, 20, -40
Step-by-step explanation:
-8 - 1 = -9
-9 - 1 = -10
-10 - 1 = -11
a2 = 16 * 3/2 = 24
a3 = 24 * 3/2 = 36
a4 = 36 * 3/2 = 54
f(2) = 5 * -2 = -10
f(3) = -10 * -2 = 20
f(4) = 20 * -2 = -40