1.

The number of bacteria in a culture is increasing according to the law of exponential growth. After 3 hours, there are 200 bacteria, and after 5 hours, there are 800 bacteria. Write an equation that can be used to determine the number of bacteria y in the culture after t hours. How many bacteria will there be after 6 hours? State the carbon dating model that scientists use to estimate the age of organic material, where R represena the ratio of carbon 14 to carbon12 of organic material It years after death. R = E 1 Suppose that the ratio of carbon 14 to carbon12 in a piece of wood discovered in a cave is R = 8?. Write an equation in terms of tthat can be used to determine the age of the piece of wood. Estimate the age (in years) of the piece of wood. (Round your answer to the nearest whole number.)