Does anyone know the answer?

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

What is the solution of the systems of equations? y=2/3x+3 x=-2

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)