gb = 2x 3.. what is gb? 5 units 10 units 15 units 30 units in the diagram 38 in the diagram, gb = 2x + 3.. what is gb? 5 units 10 units 15 units 30 units Answer · Answer: The correct option is (C) 15 units. · Step-by-step explan… Written By Chelsea P. Mariano Saturday, February 5, 2022 Add Comment Edit