1.) The decay of a radioactive substance is modeled by a differential equation.

                   A) True                     B) False

2.) One of the fundamental questions concerning any initial value problem is as follows: Does the problem have a solution?

                   A) True                     B) False

3.) One of the fundamental questions concerning any initial value problem is as follows: Does the problem have more than one solution?

                   A) True                     B) False