The Fi-Zone cable TV/Internet/phone provider charges $100 per month for all three services for a new customer's first year. Tobi normally pays p dollars for her monthly home phone service, i dollars for Internet service, and c dollars for cable television. If Fi-Zone estimates a 10% increase in the monthly rate after the first-year special rate, and Tobi's usage remains the same, how much will she save per month in the second year? Express your answer algebraically.