Define P(S) = probability that the student takes Spanish. P(T) = probability that the student takes Technology (= 0.68). P(T and S) = probability that the student takes Technology and Spanish (= 0.087). P(S|T) = probability that the student takes Spanish, given that the student takes Technology.
The Law of Conditional Probability is P(T and S) = P(S|T)*P(T)