calculus

(1 paint) - The atmospheric pressure P(h) (in pounds per square inch) at a height h (in miles) above sea level on Earth satisfies a differential equation P - KP for some positive constant k. (a) Measurements with a barometer show that P(O) - 0.2 and P(8) -0.1. What is the decay constant k? (b) Determine the atmospheric pressure 18 miles above sea level, (a) = (b) P(18) Note: You can earn partial credit on this