There are 85 kids wearing hats in school today. This is 15% of the student population. How many kids are in the school

Given f(x) = 2x^2- 5x+1, determine the function value f(2). do not f(x) = in your answer

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

Negative 5 1/12 + negative 4 1/4 + 6 3/4