Pls help with my logarithms quiz

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.

Can anyone me with 32,33,36,37,and 40.

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package