10. (10 points) Atmospheric pressure is measured in units of millibars. Letting a: be the height in km. the atmospheric pressure in millibars is modelled by p(:n) = 1000 e\"""/ 10. A balloon slowly rises up from a height of 2 km to 4 km. (a) What is the average rate of change in 19(3) as 1: changes from 2 km to 4 km? Give answer correct to two decimal places. State your answer in proper units. h (b) What is the instantaneous rate of change in 32(2) when :2: == 2 km? Give 'answer correct to two decimal places. State your answer in proper units