A cell phone company offers two plans for unlimited calling. The first plan has a monthly charge of $25 and 8.08 per text messag
e. The second plan has a monthly charge of $20 and $.12 per text message. For how many tect messages would the two plans have an equal cost? (What is the solution to this system? X represents the #of text
messages and represents the total costs)
The answer is 125 messages. Firstly the best thing to do is create two different equations. 1. y=25+.08x 2. y=20+.12x Then you plug into Desmos and see at what point they cross. They cross at (125, 35). Therefore for 125 text messages would cost 35$ for each plan.