Help me answer these questions? i suck at history

Concerns about the environment prompt congress to pass a $1 surcharge tax on each gallon of gasoline. which statement best describes the impact of such a tax

1. suppose you're an attorney. in a case you're presenting to a federal court, you argue that the person you're defending suffered cruel and unusual punishment. which amendment of the constitution should you cite? a. amendment iv b. amendment viii c. amendment iii d. amendment ix

Should the united states have continued to fight in the vietnam war after 1968?