Which statements are true about exponential functions?
the domain is all real numbers.
the range always includes negative numbers.
the graph has a horizontal asymptote at x = 0.
the input to an exponential function is the exponent.
the base represents the multiplicative rate of change.

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?