How do you do transformational geometry

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.

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

If f(x)=x+7 and g(x)=1/x what is (fog)(x)