Clarewants tomail 4and a half pounds. what could this be in kilograms

Nell has a sales clerk job that pays $12 per hour for regular gas work hours. she gets double time for any hours over 40 that she works in a week. how many hours did nell work if her weekly pay was $744

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?