Xavier walked 6 miles in three hours what was his walking rate in miles per hour

Cameron made 1 loaf of bread. his family ate 4/6 of the loaf of bread. how much of the loaf of bread remains? /

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

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