The battery life of a smartphone, as a percentage, can be approximated by the function , where is the remaining battery percentage after hours of continuous use. Which statement is the best interpretation of the -intercept of the graph of in the -plane in this context?
The battery drains at a rate of 12% per hour.
The battery will last for 100 hours.
The initial battery charge was 100%.
The battery drains completely in 12 hours.
