18 divied by. 504. help

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

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83