Hey! i’ll give brainliest please 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

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?

3.4a=57.8 what is the the value of a