Which equation is correct for the graph

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

Which number produces a rationale number when multiplied by 1/5

Factor the polynomial by its greatest common monomial factor.