John has seven grapes he give 5 to jack and 1 to hailey how many grapes does he have left

Answer this question only if you know the answer! 30 points and

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

17 in long 1.3 ft wide and 8in high what is the volume