Respuesta :
Answer:
B 20
Step-by-step explanation:
[tex]4 \times (2a - 1) \\ = 4 \times (2 \times 3 - 1)..(plug \: a = 3) \\ = 4 \times (6 - 1) \\ = 4 \times 5 \\ = 20[/tex]
Option B 20 is the right answer refer the attachment if any doubts
