Is 0.25 rational or irrational

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

The graph shown is the graph of which function?

Which of the following is an equation of a line parallel to the equation y=4x+1?