How do you define own-price elasticity theoretically and empirically?

Elaborate the cross-price elasticity theoretically and empirically

Elaborate the income elasticity theoretically and empirically

Explain the macroeconomic outlook of economy of Pakistan and suggest any policy framework for formulation of budget and reducing budget deficit.

Differentiate between the exchange rate systems vis-à-vis fixed, flexible and managed floating exchange rate system. Which regime is currently being pursued by Pakistan?