Describe credits when referring to taxes

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

Sketch one cycle if the cosine function y=2cos2theta

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0