Two cell phone companies have different rate plans. Runfast has monthly charges $10 plus $4 per gig of data. B A &D’s monthly charge is $6 plus $6 per gig of data. Your task is to determine under what circumstances each company has the better pricing. You will derive and solve a set of equations, graph those equations, and evaluate the meanings for these events. Don’t worry; I have a series of questions to guide you through the process. Good luck! 1. (1pt) Determine the equation for the monthly charges for Runfast and B A&D. Runfast= ______________________ BA&D=________________________ 2. (4 pts)Use your mathematical skill to solve this system of equations using the substitution method. (show your work here)