The following probability distribution shows the number of years the students in our class have been in college (1-freshman, 2-sophomore, 3=-junior, 4-senior). In order to make the following probability distribution valid, what does the probability of being a junior need to be? a. 0.01 Ob. 0.13 Oc. 0.10 O d. 0.05 x (number of years in college) Probability 1 2 3 4 0.36 0.46 0.05

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General Solutions and Phase Portraits. In each of Problems 1 through 6, find the general solution of the given system of equations. Also draw a direction field and a phase portrait. Describe how the solutions behave as t→ ∞0.

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