Quiz 11 1. Question Details This exercise uses the population growth model. A culture starts with 8100 bacteria, After 1 hour the count is 10,000. (a) Find a function that models the number of bacteria n(t) after t hours. (Round your r value to three decimal places.) n(t) = (b) Find the number of bacteria after 2 hours. (Round your answer to the nearest hundred.) bacteria (c) After how many hours will the number of bacteria double? (Round your answer to one decimal place.) 2. Question Details This exercise uses the radioactive decay model. The half-life of strontium-90 is 28 years. How long will it take a 40-mg sample to decay to a mass of 27.2 mg? (Round your answer to the nearest whole number.) yr