Chapter 1, Problem 9
{"Image DocumentName": "Chapter 1, Problem 9", "Image ImageDescription": "For each long-distance call anywhere in the continental United States, a new phone service will charge users 30 cents per minute for the first 2 minutes and 2 cents per minute for additional minutes in each call. Tom\u2019s current phone service charges 10 cents per minute for all calls, and his calls are never shorter than 7 minutes. If Tom\u2019s dorm switches to the new phone service, what will happen to the average length of his calls?", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}