For 7-15, factor each expression. (if it cant be, then put CBF)(if you dont know it, please dont bother.)

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

Luke wants to reduce the area of his rectangular garden by 1/4 the expression 14/w can be used to represent this change. what is another way to write this expression?

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.