The world population at the beginning of 1990 was 5.3 bilion. Assume that the population continues to grow at the rate of approimately 2vear and find the functien Qu tha population (in bitions) as a function of time t (in years), with t=0 corresponding to the beginning of 1990. (Round your answers to two decimal places (a) if the world population continues to grow at approximately 2%/year, find the length of time t (in yr) required for the population to quadrupie in se yr (b) Using the time t found in part (a), what would be the world population (in billions of people) e the growth rate were reduced to 1.3yr billion people Need Help? Read

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