You just purchased a cellular phone and are trying to decide the best cellular phone company in which to give your business. when you contacted the talks-a-lot company, they were offering a monthly plan of $40 for 600 minutes and $0.35 for each minute exceeding the 600 minutes. in the sunday paper you see an ad for the chat-away company, which offers a monthly plan of $50 for 600 minutes and $0.10 for each minute exceeding the 600 minutes. how many minutes would you have to talk over and above the 600 minutes for the cost to be the same with both companies and what would be the equal cost?