Plz

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.

This is different from the first one can someone me

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16