Answer:
Number 4, the last one
Step-by-step explanation:
D. there is no numbers to work with so you just have to use a variable
Answer:
a, ax3 =b, bx3= c , cx3=d, dx3=e
Step-by-step explanation:
2, 2×3=6, 6x3=18,18 x3 =54, 54x3= 162
Multiplication of three with previous number will give you next number in series.
