For each statement, decide whether it represents a linear…

  For each statement, decide whether it represents a linear function or an exponential function.   The population decreases by 10% each year. The population increases by 11 every 13 years. The population quadruples every 5 years. The population decreases by 10 each year. The population increases by a factor of each year. The population decreases by 13% every 11 years. The population increases by 12% each year. The population increases by 12 each year.