PLEASE HELP If the value of "y" varies directly with "x" and y= -1 when x = 3, find "y" if x = 9.
Please show your work too and thank you!!

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

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer