The probability that the students take both Advanced Weight Training and Advanced Spanish is the product of their individual probabilities. P(A and B) = 0.099 = P(A) x P(B) where A and B are the events in which a student takes Advance Weight Training and Advanced Spanish. P(B) = P(A and B) / P(A) Substituting the known values, P(B) = 0.099 / 0.71 = 0.14 Thus, the answer is 0.14.
The correct option is C = 7 + 2n. From the question given above, we are told that, a notebook costs $7 and divider cost $2 per kg. So if you buy one notebook, it will cost $7 and if you buy n packages of dividers, it will cost $2 * n = 2n. If you add all the costs of the items together, you will have Cost [C] = 7 + 2n.