The following table shows the demand schedule for PlayStation video games.

a. Compute total expenditure for each row in the table.
b. Plot the demand curve and the total expenditure curve.
c. Compute the price elasticities of demand between points A and B, B and C, C and D, and so on.
d. Over what range of prices is the demand for video games elastic? Explain.
e. Over what range of prices is the demand for video games inelastic? Explain.

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Quantity Demanded rice Total (per unit) (per year) Expenditure $30 35 40 45 50 400 000 380 000 350 000 320000 300000 260 000 230 000 190 000 60 65