\fEach of the following word problems is worth 5 points each 9) It takes 20 minutes for bacteria to grow from a population of 10,000 to 25,000. How long will it take the population to triple in size? 10) Find the decay rate for element x if the half life is 300 years11) The price of a truck will depreciate exponentially from $45,000 in 2015 to $13,000 in 2021. a) What is the rate of depreciation of the truck? b) What will the truck be worth in 2023?