## Appendix B. Exercise Solutions

This appendix contains solutions to the exercises. Note that for many
problems, there may be multiple viable solutions.

For exercise questions involving figures, the figures for each step
show only the solution for that particular step and not for the whole
question (which would include the solutions to previous steps in the
question). At the end of each question, all the figures for all the
steps in the question are combined to produce a final solution to the
question.