I need help solving these questions:

-Which of the following is true regarding state and local governments in the United States?

a- State and local governments spend similar per-person dollar amounts on education.

b- State and local governments spend similar per-person dollar amounts on health.

c- There is great variety in levels of per-person spending and revenue across states.

d- All states have an income tax.

-Which of the following best describes the substitution effect of a matching grant on educational expenditures?

a-a matching grant allows a community to spend more on all goods.

b- none of these

c- a matching grant makes education relatively cheaper.

d- both of these