What are two practical ways charlie could lower his entertainment budget?

Emily spent her summer vacation in buenos aires, argentina, where she got plastic surgery for a fraction of what it would cost in the united states. this is an example of:

Which of the following is one disadvantage of renting a place to live compared to buying a home? a. tenants have to pay for all repairs to the building. b. the landlord covers the expenses of maintaining the property. c. residents can't alter their living space without permission. d. rent is generally more than monthly mortgage payments.

Why does the downward-sloping production possibilities curve imply that factors of production are scarce?