Which expression is equivalent to 6(7x - 4)? a)13x - 10

b)13x - 24

c)42x - 10

d)42x - 24

Need this asap if anyone can i would be very grateful. if you could show workings that would really

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

Is it greater than or less than7*3_9*2