Which graph shows y and x in a proportional relationship? Pls help

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

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

Corresponding angles are a. always b. sometimes c. never congruent