Can you give me the equation to fill in the blank

Before making the decision, the company is considering doing a market research to gather m information about the demand of the market. The market research will result in either favorable or unfavorable (U) expectation to the company's new phone. It is known that: P(F l S1) = 0.2 P(U 1 S1) = 0.8 P(F 1:52)= 0.7 P(U l S2) = 0.3 (a) Given that P(F) = 0.5 and P(U) = 0.5, complete the following two tables