The function models the temperature, in degrees Fahrenheit, of a substance in a laboratory experiment, where represents the number of minutes since the experiment began. If is graphed in the -plane, which of the following is the best interpretation of the -intercept of the graph in this context?
The substance's temperature increased by 2 degrees Fahrenheit per minute.
The temperature of the substance reached 75 degrees Fahrenheit after 1 minute.
The temperature of the substance was 75 degrees Fahrenheit at the precise moment the experiment started.
The maximum temperature the substance can reach is 75 degrees Fahrenheit.