brategrl7
Jan 30, 2012, 02:33 PM
Kim purchased a cell phone but is unsure about which rate plan to select. The "regular" plan charges a fixed fee of $55 per month for 1000 minutes of airtime plus $0.33 per minute for any time over 1000 minutes. The "executive" plan charges a fixed fee of $100 per month for 1200 minutes of airtime plus $0.25 per minute over 1200 minutes.
At what level of use would Kim be indifferent between the two plans?
At what level of use would Kim be indifferent between the two plans?