Are these shapes similar or congruent? H E L P

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.

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

Find the equation using the point (4,8)