Find the inverse function f -1 (x) for the given function f (x) plz don't write a random answer to get points this is the fourth time i have posted this i need actual

Solve the system of equations. y= 2x y= x^2 - 15

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?

Carmen ayer en el mercado compro 3/4 kg de guayabas, 6/8 kg de peras, 1/2 kg de naranjas ¿cuantos kilogramos de fruta compro?