A small coffee shop sells bags of two types of coffee. Bag A contains 24 ounces and costs $15.60. Bag B contains 30 ounces and costs $20.40. Which statement is true? A: Bag A costs 3g less per ounce than Bag B. B: Bag A costs 3g more per ounce than Bag B.

C: Bag A costs 2 less per ounce than Bag B.
D: Bag A costs 2 more per ounce than Bag B.​

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?