Please who can solve all that

Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

Solve the equation by completing the square. x^2+2x=17

What’s -11-33k and factor each expression completely