1. The population of a city is modeled by the equation A - Pa\" where t=0 corresponds to a population of 225000 in the year 1984. In 1995 the population had grown to 525000. Use this information to predict the population of this city in the year 2020. 2. The sound intensity measured in watts/mi, I, is related to the decibels (level of sound) by the equation decibels . 10mg; 10-\" a) How many decibels of sound will a car horn produce if the intensity of the sound is measured at 10"\"5 ? b) What sound intensity will produce level of 80 decibels? 1 3. a) Graph the anction V - 3'09: (3 _ 610+ 1 by applying a set of transformations to the base graph y - log2 xi b) Graph the function V ' '2 (Ex-z)" 4 4. If the pH of a solution is decreased by 3 units, then what factor will the [H*] increase by? 5. If the growth of a population is modeled by the function see p I 1 + 4E\" , where 'P' is the population and 't' is the time in years. How long will it take the population stop increasing in size