Susan is looking into a new cell phone carrier. she researches her options and finds the two companies which off the best reception in her neighborhood offer very different monthly plans. write a function rule which represents each company’s monthly fees. a) company a offers unlimited minutes and texts for a flat fee of $50 per month and charges $1.50 for each gb of data used per month. b) company b offers unlimited minutes and texts for a flat fee of $35 per month and charges $5.00 for each gb of data used per month.