The rate of change of P with respect to h is proportional to p.

p=3 when h=0

p=2 when h=10

p=? when h=50

So far I know to take the derivative of P but I am terrible at word problems and don't know how to set up the equation. Any pointers would help. For example, I get confused when I see things like "with respect to". Any help at all would be appreaciated.