When Khloe left her house in the morning, her cell phone battery was partially charged. The charge remaining in Khloe's battery, as a percentage, can be modeled by the equation B=45-4.5t,B=45−4.5t, where tt is the number of hours since Khloe left her house. What is the xx-intercept of the equation and what is its interpretation in the context of the problem?
