Inside the museum, a curator is attempting to determine the age an old rotary phone. with it came a tarnished advertisement from at & t that reads: "stay connected for $10 per phone line." with a little research into at 7 t modern land line price per line, and the cpi, you should be able to determine the year of that ad and phone. what year was the ad for? show your reasoning and your work. the att phone is 37.00