How do I write this as a logarithmic function

The area covered by a certain population of bacteria increases according to a continuous exponential growth model. Suppose that a sample culture has an initial area of 73.3 mm and an observed doubling time of 14 hours. (a) Let t be the time (in hours) passed, and let y be the area of the OIno sample at time t. Write a formula relating y to t. Use exact expressions to fill in the missing parts of the formula. X 5 ? Do not use approximations. y = De D (b) What will the area of the sample be in 9 hours? Do not round any intermediate computations, and round your answer to the nearest tenth. mm