A population of 45 foxes in a wildlife preserve triples in size every 13 years. The function y=45 times 3^x, where x is the number of 13-year periods, models the population growth. Using the given function, how many foxes will there be after 39 years?
1 answer
45 × 3^(39/13) = 45 × 3^3 = 45 × 27 = 1215 foxes