MATLAB Codes Only Please! I know how to do it by hand.

A bacteria culture grows exponentially. After 2 hours, the bacteria count was 400 and after 6 hours, the bacteria countwas 20,000.

3. A bacteria culture grows exponentially. After 2 hours, the bacteria count was 400 and after 6 hours, the bacteria count was 20,000. a) Solve a system of equations to find k and yo b) Use this to determine when the bacteria count reaches 2,000,000. c) Suppose 400 was the "initial" amount and 20,000 the count after 4 hours. Find k and the amount of bacteria 2 hours BEFORE the "initial" time. In a text or comment line, explain what you notice when answers to part a)