Someone plz explain why i got these wrong! i don't understand it. ignore my writing

27 is what percent of 108? 27 is % of 108

What is not true about kl and mn? what is mn? (show your work)

Mr. jones determined that the equation y = 98 - 16/5 x could be used to predict his students' unit test scores, based on the number of days, x, a student was absent during the unit. what was the meaning of the y-intercept of the function? (by the way the 16/5 is a )