4 Suppose you went on vacation but forgot your smart phone

Last updated: 6/27/2023

4 Suppose you went on vacation but forgot your smart phone charging cable Your phone battery died after two full days 48 hours of use This situation is modeled by the equation f h 48 h where h is the hours of cell phone use and f h is the percentage of battery life left What is the upper bound of the parameter h What is the lower bound of the parameter h hrs hrs