Sherry is on vacation and wants to bring souvenirs home to family and friends. Her souvenir budget is $100, and she can choose between T-shirts (X), which cost $20 each, and key chains (Y), which cost $5 each. X and Y are normal goods. a. Draw a graph of Sherry's budget line in the figure below. Key chains (number) 25 20 15 10 5 0 2 6 8 10 T-shirts (number) b. What is the slope of Sherry's budget line? and Draw the indifference curve on figure a that reflect the preference of T-shirt and chains