I really need help, can someone help me with some math.

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

One positive number is 9 more than twice another. if their product is 95, find the numbers

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?