Match each expression with an equivalent expression

12r+t - 4r+6t

(12r+2t) - (4r+10t)

12 (r+t) - 6 (r+t) +4(r+t) - 2 (r+t)

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.

How do i do this? i don’t understand

Which number line represents the solution set for the inequality -1/2x> 24?