The population of a southern city follows the exponential law Use this information to answer parts a and b Point a If N is the population of the city and t is the time in years express N as a function of t N t Noekt Kt Type an expression using t as the variable and in terms of e b If the population doubled in size over 16 months and the current population is 60 000 what will the population be 5 years from now The population will be approximately 807259 people Do not round until the final answer Then round to the nearest whole number as needed