The document outlines a plan for Thursday, July 31st. It reminds the reader that homework is due tomorrow, there is a quiz on Monday, and they should start Chapter 8. On Wednesday they will review cost functions, long run costs, profit maximization, and cost minimization. The CEO chooses the output level and they must determine the optimal inputs of labor (L) and capital (K) to minimize costs of producing that output level given prices of inputs. Combinations of inputs in the shaded blue areas would waste money, and the optimal solution occurs where the marginal costs of the inputs are equal.