How you would estimate to subtract 189 from 643

Use the foil method to find (z− 5/3 )(z− 2/3 )

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

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?