Under her cell phone plan, Sofia pays a flat cost of $54.50 per month and $4 per gigabyte. She wants to keep her bill at $73.70 per month. Which equation or tape diagram could be used to represent the context if g represents the number of gigabytes of data Sofia can use while staying within her budget? A 54.5g 4 54.5 54-5 54.5 73.7 B. 73.7 = 54.59 +4 С 4(9 + 54.5) = 73.7 D 54.5 4. 4 4 73.2​