2 question

Question 7 (10 points) Charging toll taxes on public highways are a method of : O a Introducing taxes on negative externalities Ob Introducing proxy prices for public goods O c Introducing rationing of public goods Od None of the Above Question 8 (10 points) The price elasticity coefficient of a demand function is: Q a independent of the units of measurement wile, scale-invariant Ob Dependent on changes of somley Defined only for own prices and quantity cheeses Od Defined only for spoall types of deming wrens