When Elizabeth left her house in the morning, her cell phone battery was partially charged. The charge remaining in Elizabeth's battery, as a percentage, can be
modeled by the equation B = 5t + 40, where t is the number of hours since
Elizabeth left her house. What is the x-intercept of the equation and what is its
interpretation in the context of the problem?

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label