Evaluate the following expression. 2^-2 answer needs to be a fraction

Mr. capuano, an art teacher, surveyed his students to find out whether they are satisfied with his classes. he also noted which class each student had taken. oil-painting satisfied: 17 not satisfied: 3 sculpture satisfied: 25 not satisfied: 5 what is the value of x in the relative frequency table for the survey results? round the answer to the nearest percent. 3% 6% 8% 15%