1. If you've ever used a drive up window for banking, you've probably noticed that the buttons have Braille dots on them. This is puzzling because blind people don't drive cars and don't use drive through banking. Why is it that keypad buttons on drive up automatic teller machines have Braille dots?

2. "If there is one peanut seller in the park, he could still be a price taker." True/False. Explain

3. Provide two reasons for why the marginal cost curve is upward sloping. Be sure to explain each of these in one or two sentences. You may also use a graph.