Starbucks coffee and Espresso Royale coffee are perfect substitutes for Emily and the slope of her indifference curves is 1 (in absolute value). One day Emily bought 2 coffees from Starbucks and 1 coffee from Espresso Royale. (The cups of both drinks are the samesize and Emily behaves optimally.)Coffee at Starbucks is less expensive than Espresso RoyaleO Coffee at Espresso Royale is more expensive than coffee at StarbucksO Coffee at Starbucks and Espresso Royale cost the same (after accounting for all transactions costs)O Emily prefers Starbucks' coffee to Espresso Royale's coffeeO None of the above.

An indifference curve is a graphical representation that shows different combinations of two goods…

Starbucks coffee and Espresso Royale coffee are perfect substitutes for Emily and the slope of her indifference curves is 1 (in absolute value). One day Emily bought 2 coffees from Starbucks and 1 coffee from Espresso Royale. (The cups of both drinks are the same size and Emily behaves optimally.) Ⓒ Coffee at Starbucks is less expensive than Espresso Royale O Coffee at Espresso Royale is more expensive than coffee at Starbucks O Coffee at Starbucks and Espresso Royale cost the same (after accounting for all transactions costs) O Emily prefers Starbucks' coffee to Espresso Royale's coffee O None of the above.