Only write your own answers based on your understanding and calculations. Answer the following questions: - Show your calculations and for any explanation, your answers should not exceed 80 words for each question. 1. Your younger brother needs $600 to buy a new computer. He has opened a sandwich stand to make the money he needs. Your father is paying for all of the ingredients. He currently is charging $2 per sandwich, but he wants to adjust his price to earn the $600 faster. If you know that the demand for sandwich is elastic, what is your advice to him? Explain. 2. With lower fuel costs, an airline lowered its average traveling cost from $1.50 to $1 per passenger mile and the number of passenger miles increased from 400 passenger a day to 600 passenger a day. What is the price elasticity of demand for air travel over this price range? Explain your result and also describe the demand for air travel (is elastic or inelastic). 3. Suppose you own a small Pizza shop. You currently charge 30 dirham per dinner for everyone who comes to your shop. Your friend who took an economics course in college tells you that there may be a way to increase your total revenue. Given the demand curves shown, answer the following questions. Show calculations when possible. Given the graphs and what your friend knows about economics, he recommends you decrease the price from 30 to 20 dirham. Calculate the elasticity of demand and then answer the following: (a) is it worth it to decrease the price or not? (b) how much could you increase total revenue if you take? his advice? Explain.