Prelesson+Homework

=**__Homework__**=
 * 1) ===Go to media type="custom" key="3811877"===
 * 2) ===Read the six sections of "How gas prices work."===
 * 3) ===Go to the "Discussion" tab and respond to two of the three questions.===
 * 4) ===Reply to at least one person's response in any of the three threads.===