Can u give me the answer to the nearest hundredth and explain me the steps please.!?

Use exponential regression to write an exponential function for this situation A medicine has 200 units of an ingredient per dose when it is taken. After being taken, the ingredient decays after each hour and is summarized in the chart below: Hours 1 3 5 7 9 11 Units of 185.4 130.3 40 25.9 5.2 072 Ingredient State which values would go in the place of a and b: y = a(b)" *Type only the numerical answer in the blank with no spaces. Round each value to the nearest hundredth a: b